Datasets:

suriyagunasekar

/

stackoverflow-with-meta-data

like 5

[ "There are several reasons why you might use the createSecretKey method in the crypto module instead of a string:\nSecurity: The createSecretKey method generates a secure, random key that is much less likely to be guessed or hacked than a simple string. This is important for protecting sensitive information, such as passwords or encryption keys.\nCompatibility: The createSecretKey method generates a key in the correct format for use with other crypto functions, such as encrypt and decrypt. This can save you time and effort when working with cryptographic operations.\nEase of use: The createSecretKey method is a simple, one-line command that can be easily integrated into your code. This can make it easier to work with cryptographic operations, especially if you are not an expert in cryptography.\nOverall, using the createSecretKey method in the crypto module can provide enhanced security, compatibility, and ease of use when working with cryptographic operations.\n" ]

[ 0 ]

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[ "cryptography", "hmac", "javascript", "node.js" ]

[ "Put lock objects into dictionary indexed by the key - Dictionary<string, object> and grab objects by key to lock.\nIf you need to dynamically add new key/lock object pairs make sure to lock around the dictionary access, otherwise if after construction you only read values from dictionary no additional locking is needed.\n", "I create a library called AsyncKeyedLock which solves the problem. Internally it uses a ConcurrentDictionary and SemaphoreSlim objects.\nIn case you're using asynchronous code you can use:\nusing (await _locker.LockAsync(myObject.Id))\n{\n ...\n}\n\nor if you're using synchronous code:\nusing (_locker.Lock(myObject.Id))\n{\n ...\n}\n\n" ]

[ 6, 0 ]

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[]

[ ".net", "c#", "locking", "multithreading" ]

[ "Fakestore API can receive a limit query parameter :\nfetch('https://fakestoreapi.com/products/category/jewelery?limit=2')\n .then(res=>res.json())\n .then(json=>console.log(json))\n\n\nYou can also use limit(Number) and sort(asc|desc) as a query string to get your ideal results\n\nhttps://fakestoreapi.com/docs\n" ]

[ 1 ]

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[ "api", "javascript", "reactjs" ]

[ "You can use dplyr to create the new variable an then filter after\ndf %>% \n mutate(ratios = row1/row2) %>% \n filter(ratios > 3)\n\n" ]

[ 2 ]

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[ "dataframe", "r" ]

[ "Not sure if I understand the conditions correctly, but assuming the goal is to have #item always partially visible while scrolling within the container, perhaps try set position: sticky on #item.\nThis way, the offset range of #item when it sticks to the border can be specified by top and bottom.\nExample:\n\n\n#body {\n height: 200px;\n overflow: scroll;\n font-family: sans-serif;\n font-size: 40px;\n}\n\n#container {\n width: 100%;\n height: 900px;\n background-color: rgba(255, 0, 0, 0.1);\n position: relative;\n display: flex;\n align-items: center;\n justify-content: center;\n}\n\n#item {\n display: inline;\n background-color: rgba(0, 0, 255, 0.1);\n padding: 10px 20px;\n border-radius: 5px;\n position: sticky;\n top: -50px;\n bottom: -50px;\n}\n<div id=\"body\">\n <div id=\"container\">\n <div id=\"item\">\n Hello\n </div>\n </div>\n</div>\n\n\n\n" ]

[ 2 ]

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[ "css", "javascript", "position" ]

[ "It's possible that the blockedPermissions property is not supported by the eas build command. This property is intended for use with the expo build:android command, which creates a standalone APK file for your app.\nTo remove the REQUEST_INSTALL_PACKAGES permission, you can try adding the following to your app.json file instead:\n\"android\": {\n \"permissions\": [\n \"REQUEST_INSTALL_PACKAGES\",\n ],\n \"permissionExceptions\": {\n \"REQUEST_INSTALL_PACKAGES\": {\n \"description\": \"This app does not require this permission\"\n }\n }\n},\n\nThis will explicitly list the REQUEST_INSTALL_PACKAGES permission and provide an explanation for why it's not needed by your app. When you run expo build:android to create a standalone APK, this permission will be removed from the app.\n", "Instead, you can simply add \"expo\": { \"android\": { \"package\": \"com.my.app\", \"permissions\": [\"REQUEST_INSTALL_PACKAGES\"] } } to your app.json file to remove the REQUEST_INSTALL_PACKAGES permission from your app.\n", "It looks like there is an issue with how Expo is handling the blockedPermissions configuration in your app.json file. It appears that Expo is not applying this configuration when building the app with the eas build command.\nSolution One\nOne possible solution is to use the expo build:android command instead of the eas build command. This command will build your app using Expo's build service, which may handle the blockedPermissions configuration correctly. You can then use the generated .aab file to submit your app to the App Store.\nSolution Two\nAnother solution is to manually remove the REQUEST_INSTALL_PACKAGES permission from the AndroidManifest.xml file before building the app. You can do this by editing the file and removing the following line:\n<uses-permission android:name=\"android.permission.REQUEST_INSTALL_PACKAGES\" />\n\nOnce you have removed this line, you can run the eas build command to build your app, and the generated .aab file should not include the REQUEST_INSTALL_PACKAGES permission.\n" ]

[ 0, 0, 0 ]

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[ "android", "android_manifest", "eas", "expo", "expo_build" ]

[ "May be this can help\n// Import the fs module to read the file\nconst fs = require(\"fs\");\n\n// Read the file into a Buffer object\nconst screenshotBuffer = fs.readFileSync(\"path/to/screenshot.png\");\n\n// Add the screenshot to the Allure report\nallure.createAttachment(\"screenshot\", screenshotBuffer, \"image/png\");\n\n" ]

[ 0 ]

[]

[]

[ "allure", "javascript" ]

[ "Your code have many errors when running it first make sure you are install airgram package:\nnpm install airgram\n\nSecond error\n internalBinding('errors').triggerUncaughtException(\n\nyou can view this answer to solve it.\n" ]

[ 1 ]

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[]

[ "javascript", "node.js", "node_modules", "typescript" ]

[ "added a working formula to your sheet\n=filter({Schedule!AH:AH,Schedule!AW:AW},TO_DATE(INT(left(Schedule!D:D,10)))=I1)\n\n\n", "The values in column Schedule!A2:A are not dates but text strings that look like dates. You can search them in a query() if you convert the search key in cell I1 to a text string with to_text(), like this:\n=query(Schedule!A1:BU, \"select AH, AW where A = '\" & to_text(I1) & \"' \", 1)\n" ]

[ 1, 1 ]

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[]

[ "google_sheets", "google_sheets_formula" ]

[ "You see the standard security prompt in Outlook. You can do the following to avoid it:\n\nUse the Security Manager component for supressing the security prompts in Outlook. \nUse a low-level API which doesn't generate such security prompts - Extended MAPI. Or any other third-party wrappers around that API such as Redemption.\nDeploy Outlook security settings (for administrators).\n\nYou can read more about all of these ways on the Outlook \"Object Model Guard\" Security Issues for Developers page.\n", "We encountered this issue on a recent Windows Server deployment. The server has Office 365 installed and upto date Symantec Antivirus, for this reason, we overrode the default Programmatic Access Security Setting (while we investigate the Antivirus detection issue).\n\nIn Outlook go to File -> Options -> Trust Center -> Trust Center Settings -> Programmatic Access\n[UPDATE]: After performing an update on the Antivirus Software and downloading the latest definitions, the status within Outlook changed to \"Valid\".\n\n" ]

[ 0, 0 ]

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[ "c#", "console", "office_interop", "outlook" ]

[ "Use grouped summarize() and mutate() to get initial values, then do additional summaries within bind_rows() to add subtotals and totals. Finally, use forcats::fct_relevel() inside dplyr::arrange() to put everything in order.\nlibrary(dplyr)\nlibrary(forcats)\n\nsamples_stack %>%\n group_by(Network, Merchant) %>%\n summarize(\n Count_Merchant = n(), \n Sum_FaceValue = sum(FaceValue),\n .groups = \"drop\"\n ) %>%\n mutate(\n Pct_Merchant = Count_Merchant / sum(Count_Merchant),\n Pct_FaceValue = Sum_FaceValue / sum(Sum_FaceValue)\n ) %>%\n bind_rows(\n summarize(\n group_by(., Network),\n Merchant = \"SUBTOTAL\",\n across(Count_Merchant:Pct_FaceValue, sum)\n ),\n summarize(\n .,\n across(Network:Merchant, ~ \"TOTAL\"),\n across(Count_Merchant:Pct_FaceValue, sum)\n )\n ) %>%\n arrange(\n fct_relevel(Network, \"TOTAL\", after = Inf),\n fct_relevel(Merchant, \"SUBTOTAL\")\n )\n\n# A tibble: 12 × 6\n Network Merchant Count_Merchant Sum_FaceValue Pct_Merchant Pct_FaceValue\n <chr> <chr> <int> <dbl> <dbl> <dbl>\n 1 A SUBTOTAL 9 2840 0.18 0.130 \n 2 A Fat 4 1000 0.08 0.0457 \n 3 A WAVE 5 1840 0.1 0.0841 \n 4 G SUBTOTAL 32 15890 0.64 0.727 \n 5 G Fat 31 13890 0.62 0.635 \n 6 G United 1 2000 0.02 0.0914 \n 7 M SUBTOTAL 8 3040 0.16 0.139 \n 8 M Fat 4 1200 0.08 0.0549 \n 9 M WAVE 4 1840 0.08 0.0841 \n10 X9 SUBTOTAL 1 100 0.02 0.00457\n11 X9 WAVE 1 100 0.02 0.00457\n12 TOTAL TOTAL 50 21870 1 1 \n\n" ]

[ 1 ]

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[ "dplyr", "gt", "kableextra", "r" ]

[ "One way to convert the color of images in a pandas dataframe is to use the apply method on the column containing the image data. This method allows you to apply a custom function to each element of the column.\nFor example, if your dataframe has a column called 'images' containing the image data, you could convert the color of the images to grayscale using the following code:\ndef grayscale(image):\n return cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)\n\ndf['images'] = df['images'].apply(grayscale)\n\n", "One way to loop through the images in the column and convert them to grayscale would be to use the apply method of the pandas dataframe. Here is an example:\nimport numpy as np\nimport cv2\n\n# Convert an image to grayscale\ndef to_grayscale(image):\n return cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)\n\n# Loop through the images in the column and convert them to grayscale\ndf['grayscale_images'] = df['images'].apply(to_grayscale)\n\nThis code will apply the to_grayscale function to each image in the images column of the dataframe, and store the resulting grayscale images in a new column called grayscale_images.\nAlternatively, you could also use a for loop to iterate through the rows of the dataframe and convert the images in the images column to grayscale. Here is an example:\nimport numpy as np\nimport cv2\n\n# Create a new column for the grayscale images\ndf['grayscale_images'] = np.nan\n\n# Loop through the rows of the dataframe\nfor i, row in df.iterrows():\n # Convert the image to grayscale\n grayscale_image = cv2.cvtColor(row['images'], cv2.COLOR_BGR2GRAY)\n # Store the grayscale image in the new column\n df.at[i, 'grayscale_images'] = grayscale_image\n\nBoth of these approaches will loop through the images in the images column and convert them to grayscale.\n" ]

[ 1, 0 ]

[]

[]

[ "pandas", "python" ]

[ "You should provide more information on:\n\nWhich physics system are you using, 2D/3D?\nWhat objects should be affected by the gravity change?\nAre you using a physics-based controller?\n\nFor a vague answer, the default Unity Physics gravity is a Vector 3 of (0,-9.81f,0) which mimicks the real-world gravity of objects falling down. If you're looking to invert gravity, or lessen its pull using code then you'd have to modify the Physics.gravity (or Physics2D.gravity) value to something else:\nPhysics.gravity = new Vector3(0, 1, 0) // Make physics-based objects move upward on the Y-axis\n\nTo limit this change for a set duration, you could use coroutines as follows:\nprivate readonly Vector3 _defaultGravity = new(0, -9.81f, 0);\nprivate readonly Vector3 _temporaryGravity = new(0, 1, 0);\n\n/// <summary>\n/// Starts a coroutine that affects the gravity for a given amount of time.\n/// </summary>\n/// <param name=\"seconds\">How long in seconds should the temporary gravity be in effect for</param>\nprivate void ChangeGravityForSeconds(float seconds)\n{\n StartCoroutine(DecreaseGravity(seconds));\n}\n\nprivate IEnumerator DecreaseGravity(float time)\n{\n var elapsedTime = 0.0f;\n while (elapsedTime < time)\n {\n Physics.gravity = _temporaryGravity;\n elapsedTime += Time.deltaTime;\n yield return new WaitForSeconds(1.0f);\n }\n\n // Restore the default gravity.\n Physics.gravity = _defaultGravity;\n}\n\nThen you could call ChangeGravityForSeconds(seconds) whenever you need to alter the gravity to the pre-defined value.\nAlternatively, you could achieve this using the MonoBehaviour.Invoke method that takes in a float for the delay before invocation.\nprivate void ChangeGravityForSeconds(float seconds)\n{\n Physics.gravity = _temporaryGravity;\n Invoke(nameof(ResetGravity), seconds);\n}\n\nprivate void ResetGravity()\n{\n Physics.gravity = _defaultGravity;\n}\n\n" ]

[ 0 ]

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[]

[ "c#", "unity3d" ]

[ "Here are a code sample hope it will be usefull\nimport email\n\nemail_message: email.message.Message = email.message_from_bytes(raw_email_body)\n# or as in your example\n# email.message_from_string(open(filename, 'r').read(), policy=email.policy.default)\n\nmessage_parts = list(message.walk())\nfor part in message_parts:\n ... # write some logic here\n\n", "The MIME (Multipurpose Internet Mail Extensions) standard does not specify how threads should be represented in emails. MIME is a format for encoding various types of data in email messages, such as text, images, and attachments, but does not define the structure or organization of the message itself.\nTherefore, parsing threads from a MIME-formatted email would require custom logic and may not be straightforward due to the various ways in which threads can be represented in email messages. Some common approaches to parsing threads from emails include using regular expressions to identify common patterns in the email content, or using natural language processing techniques to analyze the content and identify relationships between messages.\nIt's worth noting that some email clients and services, such as Gmail, may add their own custom headers to emails to indicate threading information. In these cases, it may be possible to parse thread information from the email headers rather than the content itself. However, this would depend on the specific headers used by the email client or service in question.\n" ]

[ 0, 0 ]

[]

[]

[ "email", "email_parsing", "mime", "parsing", "python" ]

[ "To sort two objects with the same key in JavaScript, you can use the Array.sort method.\nThe Array.sort method allows you to specify a comparator function that determines the sorting order for each element in the array. The comparator function should take two arguments, and it should return a negative value if the first argument should be sorted before the second argument, a positive value if the first argument should be sorted after the second argument, and 0 if the two arguments are equal.\nHere is an example of how to use the Array.sort method to sort two objects with the same key in JavaScript:\n// Define two objects with the same key\nconst obj1 = {key: 1, value: \"apple\"};\nconst obj2 = {key: 1, value: \"orange\"};\n\n// Define the comparator function\nfunction comparator(a, b) {\n // Compare the key values of the objects\n return a.key - b.key;\n}\n\n// Use the sort method to sort the objects\nconst sortedObjects = [obj1, obj2].sort(comparator);\n\n// Print the sorted objects\nconsole.log(sortedObjects);\n\n\nIn this example, the comparator function is defined to compare the key values of the objects and return the difference as the sorting order. The Array.sort method is then used to sort the objects based on this comparator function.\nAs you can see, the objects are sorted based on the key value, and the objects with the same key are preserved in the original order.\nYou can modify the comparator function to use different values as the sorting key. For example, you can use the value field of the objects as the sorting key instead of the key field. Here is how to do this:\n", "My idea is to use hash map to store key obj2, then loop through key obj1 to sort obj2\n\n\n const obj1 = [\n {key: 1, id: 5, name: 'John'},\n {key: 2, id: 5, name: 'John'},\n {key: 3, id: 5, name: 'John'}\n ]\n\n const obj2 = [\n {key: 2, id: 5, name: 'John'},\n {key: 1, id: 5, name: 'John'},\n {key: 3, id: 5, name: 'John'}\n]\n\nfunction help(obj1, obj2, key) {\n const hashKeyObj2 = obj2.reduce((val, item) => {\n val[item[key]] = item;\n return val;\n }, {});\n return obj1.map((item) => hashKeyObj2[item[key]]);\n}\n\nconsole.log(help(obj1, obj2, 'key'))\n\n\n\n", "One-liner\nlet sorted = obj1.map(a => obj2.find(b => a.key === b.key))\n\n", "This snippet will sort obj2 from obj1 order:\n\n\nconst obj1 = [\n { key: 1, id: 5, name: 'John' },\n { key: 3, id: 5, name: 'John' },\n { key: 2, id: 5, name: 'John' },\n]\n\nconst obj2 = [\n { key: 2, id: 5, name: 'John' },\n { key: 1, id: 5, name: 'Jane' },\n { key: 3, id: 5, name: 'Tom' },\n]\n\nfunction helper(obj1, obj2, key) {\n const findIndex = (refValue) => obj1.findIndex((candidate) => candidate[key] === refValue)\n const comparator = (item1, item2) => findIndex(item1[key]) - findIndex(item2[key])\n return [...obj2].sort(comparator)\n}\n\nconst result = helper(obj1, obj2, 'key')\n\nconsole.log('result :', result)\n\n\n\n", "An Approach using lodash\nfunction sortArrayBasedOnKeys(\n array1: Record<string, number | string>[],\n array2: Record<string, number | string>[],\n key: string\n) {\n const order = _.map(array1, key);\n return _.sortBy(array2, (item) => _.indexOf(order, item[key]));\n}\n\nFirst we are getting order in which objects in the array1 are placed and then using that order to sort the next array.\n" ]

[ 0, 0, 0, 0, 0 ]

[]

[]

[ "javascript", "typescript" ]

[ "Register the event handler in the intialize() method, instead of in the FXML. Remove the onMouseEnter and onMouseExit attributes from the FXML file, and modify the controller as follows:\nvoid btnMouseEnter(Node first, Node second) {\n fadeOffTransition(first);\n second.setVisible(true);\n translateTransition(second);\n}\n\n\nvoid btnMouseExit(Node first, Node second) {\n fadeInTransition(first);\n second.setVisible(false);\n}\n\n@Override\npublic void initialize(URL url, ResourceBundle rb) {\n btnView2.setOnMouseEnter(e -> btnMouseEnter(btnView2, hboxView2));\n btnView2.setOnMouseExit(e -> btnMouseExit(btnView2, hboxView2));\n}\n\nYou can also make the obvious reductions in code, e.g.:\nprivate void registerMouseHandlers(Button button, Node target) {\n button.setOnMouseEnter(e -> btnMouseEnter(button, target));\n button.setOnMouseExit(e -> btnMouseExit(button, target));\n}\n\n@Override\npublic void initialize(URL location, ResourceBundle resources) {\n registerMouseHandlers(btnView, hboxView);\n registerMouseHandlers(btnView2, hboxView2);\n}\n\nAnd if you have a fairly large number of these, it might also be more efficient (in terms of lines of code) to do\n@Override\npublic void initialize(URL location, ResourceBundle resources) {\n List<Button> buttons = List.of(btnView, btnView2);\n List<Node> targets = List.of(hboxView, hboxView2);\n for (int i = 0 ; i < buttons.size() ; i++) {\n registerMouseHandlers(buttons.get(i), targets.get(i));\n }\n}\n\nYou could also consider creating a custom component encapsulating your button and hbox, which simply implements the event handlers for a single button-hbox pair, and then including them in the FXML using fx:include.\n" ]

[ 0 ]

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[ "java", "javafx", "netbeans", "scenebuilder" ]

[ "Since Node has a property isVisited, I assume that there could be cycles in the Graph.\nThe algorithm can be described in the following steps:\n\nMark the root Node as visited and put it into the Queue.\n\nThen until the Queue is not empty, repeat:\n\nRemove the Node (current Node) from the head of the Queue;\nCheck its left and right child-Nodes. If a child-Node exists (i.e. not null) and hasn't been visited yet, then add this node both into the Queue and resulting list of sibling-Nodes and set isVisited property of the child-Node to true.\n\n\n\nThat's how it might be implemented:\npublic static List<Node> bfs(Node root) {\n if (root == null) return Collections.emptyList();\n \n List<Node> siblings = new ArrayList<>();\n Queue<Node> queue = new ArrayDeque<>(); // performs better than LinkedList\n \n queue.add(root);\n // siblings.add(root); // uncomment this line ONLY if you need the root-Node to be present in the result\n root.visited = true;\n \n while (!queue.isEmpty()) {\n Node current = queue.poll();\n\n tryAdd(siblings, queue, current.left);\n tryAdd(siblings, queue, current.right);\n }\n return siblings;\n}\n\npublic static void tryAdd(List<Node> siblings, Queue<Node> queue, Node next) {\n if (next != null && !next.isVisited()) {\n queue.add(next);\n siblings.add(next);\n next.setVisited(true);\n }\n}\n\nTo avoid repeating the same actions for both left and right child-Nodes, I've created method tryAdd().\nWe can alter its conditional logic by introducing a Predicate (in this case condition is short and well readable, and this option is shown rather for education purposes):\npublic static final Predicate<Node> IS_NULL_OR_VISITED =\n Predicate.<Node>isEqual(null).or(Node::isVisited);\n\npublic static void tryAdd(List<Node> siblings, Queue<Node> queue, Node next) {\n if (IS_NULL_OR_VISITED.test(next)) return;\n \n queue.add(next);\n siblings.add(next);\n next.setVisited(true);\n}\n\n", "You should not try to get the sibling of a node. If you push the children of the current node to the queue, you will guarantee that you pull them out of the queue in sibling order. The important thing here is that you visit a node when it is pulled from the queue, not when it is added to the queue.\nSo your function could be turned into this:\n public static List<Node> bfs(Node root){\n Queue<Node> queue = new LinkedList<>();\n List<Node> result = new ArrayList<>();\n if (root == null){\n return result;\n }\n queue.add(root); // Don't visit this root node yet...\n while (!queue.isEmpty())\n {\n Node node = queue.poll();\n result.add(node); // Here we visit the node\n // Add the children of the visited node to the queue\n if (node.left != null) queue.add(node.left);\n if (node.right != null) queue.add(node.right);\n }\n return result;\n }\n\nThe caller can do this:\n for (Node node : bfs(node1)) {\n System.out.println(node.data);\n }\n\n", "On a more side note, you can find an implementation for the BFS algorithm along with a Ford Fulkerson algorithm on this GitHub repository: Ford Fulkerson with BFS- Max flow problem\n" ]

[ 2, 0, 0 ]

[]

[]

[ "algorithm", "breadth_first_search", "graph", "java" ]

[ "im not sure how passport works, as i usually work with express sessions, but maybe the concept will be the same\nfunction createContext(opts: trpcExpress.CreateExpressContextOptions) {\n let user = {};\n if (opts.req.session.user) {\n user = opts.req.session.user;\n }\n\n return {\n user\n };\n}\n\ntype Context = inferAsyncReturnType<typeof createContext>;\nconst t = initTRPC.context<Context>().create();\nconst appRouter = t.router({\n hello: t.procedure.query(({ ctx, input }) => {\n console.log(\"user\", ctx.req?.session?.user);\n console.log({ input });\n return \"Hello world\";\n }),\n\n session: t.procedure.query(({ ctx, input }) => {\n console.log({ input });\n ctx.req.session.user = { name: \"jane\" };\n return \"session created\";\n }),\n});\n\napp.use(\n \"/trpc\",\n trpcExpress.createExpressMiddleware({ router: appRouter, createContext })\n);\n\ntldr: check the req.session object for the user and then add it to the object the context returns\n", "I had a similar issue, albeit with typescript. I noticed the request types were different and had to type them differently to match, so I could have my session available.\nIf you are using typescript, you can type your context like this\nimport { CreateExpressContextOptions } from '@trpc/server/adapters/express'\nimport { Request } from 'express'\nimport session from 'express-session'\n\n// create my session type by extending the session type from 'express-session' and adding my userId on it\nexport type Session = session.Session &\n Partial<session.SessionData> & { userId?: string }\n\n// Replace the req object from trpc's CreateExpressContextOptions with the express request and add my session onto it\ntype ExpressRequest = Omit<CreateExpressContextOptions, 'req'> & {\n req: Request & { session: Session }\n}\n\nexport const createContext = ({\n req,\n res,\n}: ExpressRequest) => {\n return {\n req,\n res,\n }\n}\n\nexport type Context = inferAsyncReturnType<typeof createContext>\n\n", "I added this to my client-side fetcher used by trpc\n{\n credentials: \"include\"\n}\n\n" ]

[ 0, 0, 0 ]

[]

[]

[ "express", "express_session", "passport.js", "trpc.io", "typescript" ]

[ "You have to specify a filename, not only the name of the directory:\ndocument.Save(@\"C:\\Users\\HP\\Desktop\\CourseWorkPDFs\\FileName.pdf\");\n\nYou'll have to modify the code to generate a unique filename from the orderid or the current date and time or using some other mechanism.\n" ]

[ 0 ]

[]

[]

[ "c#", "directory", "pdf" ]

[ "You need decode your response first then use it:\nLeaveListModel.fromJson(jsonDecode(response));\n\nalso I think you are passing query encoded to ApiWrapper, so you need to decode it like this:\nMap<String, dynamic> params = data['params'] != null ? jsonDecode(data['params']) : {};\n\n", "return LeaveListModel.fromJson(response);\n\nIt seems to me that you should use response.data here, instead of response.\nreturn LeaveListModel.fromJson(response.data);\n\n", "Try this:\nMap<String, dynamic>.from(yourData)\n\n", "It looks like you're trying to assign a Map<dynamic, dynamic> object to a variable of type Map<String, dynamic>. This is causing the error that you're seeing because the types do not match. In order to fix this error, you can either cast the Map<dynamic, dynamic> object to a Map<String, dynamic> object before assigning it to the variable, or you can change the type of the variable to Map<dynamic, dynamic>.\nHere is an example of how you could fix the error by casting the object to the correct type:\nMap<String, dynamic> params = data['params'] != null\n ? data['params'] as Map<String, dynamic>\n : {};\n\nAlternatively, you could fix the error by changing the type of the params variable to Map<dynamic, dynamic>:\nMap<dynamic, dynamic> params = data['params'] != null ? data['params'] : {};\n\n", "For Map<String, dynamic> json, parse like this\nList<Blog> blogs = (json['blogs'] as List<dynamic>).map((e) => Blog.fromJson(e as Map<String, dynamic>)).toList();\n\n" ]

[ 0, 0, 0, 0, 0 ]

[]

[]

[ "dart", "flutter", "json" ]

[ "You have to start the ASP.Net Core app. In there you should have a Startup Class.\nGo to Configure Services and add something like this:\nservices.AddSpaStaticFiles(configuration => { configuration.RootPath = \"WebUI\"; });\nThen the Kestrel Server should start up with the SPA.\n", "I was also struggling with this and finally found the solution. The problem was the Node.js version: I was using Node v18.12.1 (LTS at the time). I had installed it with nvm for Windows. This way, the frontend blocked the startup of the backend.\nThen, I used nvm to switch to Node v16.18.1. In both cases for 64-bit architecture. With this change, effectively the frontend and backend run perfect as expected from the tutorial.\nThis solution belongs to this user in Microsoft Q&A, where I sought for help as well.\n" ]

[ 0, 0 ]

[ "I use two instances of VS open for this; each with a different start up project.\n" ]

[ -1 ]

[ "angular", "asp.net", "c#", "visual_studio_2022" ]

[ "The \" width & height\" image attribute fixed the image's dimensions this thing you can see in my code snippet. So it would help if you used CSS to style your photos to make them responsive (automatically scaleable on big and small screens.).\nTry following the CSS code:\n\n\n.my_img {\n width: 420px;\n max-width: 100%;\n height: auto;\n}\n<img src=\"https://images.pexels.com/photos/2453551/pexels-photo-2453551.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1\" alt=\"leaf-image\" width=\"200\" height=\"300\" />\n\n\n<img src=\"https://images.pexels.com/photos/2453551/pexels-photo-2453551.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1\" alt=\"leaf-image\" class=\"my_img\" />\n\n\n\nSet class for the image.\nThen set width whatever you want, after that set max-width: 100%; and height: auto; which will help the browser to increase and decrease the height of the image when the image needs to be scaled down on smaller than 420px screens.\nWidth property will set the image size to 420px when the screen size is bigger than 420px and the max-width: 100%; will make the image responsive, It means when the screen size will less than 420px your image will automatically be adjusted according to your screen with.\nYou can avoid scrset and width/height image attribute. Use CSS.\n" ]

[ 0 ]

[]

[]

[ "css", "html", "jekyll" ]

[ "Use this Code to Get MenuItem ID:\nMenuID = (m.WParam.ToInt64 And &HFFFF&)\n\n" ]

[ 0 ]

[]

[]

[ "mainmenu", "menu", "resources", "vb.net", "wndproc" ]

[ "As told on this page, we don't use the @nuxtjs/axios module anymore with Nuxt3 but rather ohmyfetch, which is now baked-in directly in the core of the framework through $axios as writted here.\nHence, your config file should look like this\nexport default defineNuxtConfig({\n app: {\n head: {\n title: 'Nuxt Dojo',\n meta: [\n { name: 'description', content: 'Everything about - Nuxt-3' }\n ],\n link: [\n { rel: 'stylesheet', href: 'https://fonts.googleapis.com/icon?family=Material+Icons' }\n ]\n }\n },\n runtimeConfig: {\n currencyKey: process.env.CURRENCY_API_KEY\n },\n modules: [\n \"@nuxtjs/tailwindcss\"\n ],\n})\n\nAnd the given /pages/products/index.vue can be like that\n<template>\n <div>\n <p v-for=\"user in users\" :key=\"user.id\">ID: {{ user.id }} {{ user.name }}</p>\n </div>\n</template>\n\n\n<script>\ndefinePageMeta({\n layout: \"products\"\n})\n\nexport default {\n data () {\n return {\n users: '',\n }\n },\n async mounted() {\n this.users = await $fetch('https://jsonplaceholder.typicode.com/users')\n },\n}\n</script>\n\nThis is how it looks at the end (with a successful HTTP request in the network tab)\n\n\nAs a confirmation, we can see that the module is indeed not supported (and will not be) by Nuxt3 on the modules page.\nThe Suspense error is detailed in the official documentation\n\n<Suspense> is an experimental feature. It is not guaranteed to reach stable status and the API may change before it does.\n\nIt may seem scary but you can totally use the API as per se and since it's a warning and not an error, it's totally fine!\n" ]

[ 0 ]

[]

[]

[ "axios", "javascript", "nuxt.js", "nuxtjs3", "vue.js" ]

[ "use useHead composable\n\nThe properties of useHead can be dynamic, accepting ref, computed, and reactive properties. meta parameter can also accept a function returning an object to make the entire object reactive.\n\nlearn more here: https://nuxt.com/docs/api/composables/use-head\n" ]

[ 0 ]

[]

[]

[ "facebook_opengraph", "nuxt.js", "nuxtjs3", "typescript", "vue.js" ]

[ "It looks like there is an issue with the for loop that you are using to add event listeners to each button. The condition in your for loop is checking the length of the tab variable, rather than the value of the i variable. As a result, the for loop will never run because the condition will always be false.\nTo fix this, you can change the condition in your for loop to check the value of the i variable instead. Here is how you can modify your code\nvar tab = document.querySelectorAll(\".drum\");\n\nfor (let i = 0; i < tab.length; i++) {\n tab[i].addEventListener(\"click\", function() {\n var sound = new Audio(\"sounds\\tom-1.mp3\");\n \n sound.play();\n });\n}\n\nWith this change, the for loop will iterate over each element in the tab variable, and add an event listener to each one. This should allow you to play the corresponding sound when you click on each button.\n" ]

[ 1 ]

[]

[]

[ "html", "html5_audio", "javascript" ]

[ "Your SQL query is not structured right - you are trying to do both an implicit JOIN via , regions r and an explicit JOIN via JOIN regions.\nHere's a corrected version of your query that just uses the explicit JOIN:\nSELECT t.territory_description, r.region_description, t.region_id, r.region_id \nFROM territories t\nJOIN regions r\nON t.region_id = r.region_id\n\n" ]

[ 0 ]

[]

[]

[ "join", "postgresql", "sql" ]

[ "I also had similar case when I was working with lerna and yarn workspaces. In my case the problem was using multiple and different versions of react, some where hoisted some were not during lerna compilation process.\n\nAccording to docs\n\nIn order for Hooks to work, the react import from your application\ncode needs to resolve to the same module as the react import from\ninside the react-dom package.\n\nRun this command to list installed versions of react. And if you see more than one React, you’ll need to figure out why this happens and fix your dependency tree.\nnpm ls react\n\nOR\nyarn list react\n\nRead more about the problem and solutions here\n", "check that you have styled-components in your dependencies in file package.json\nby:\n cd project_name/src\n npm install styled-components\n\n" ]

[ 0, 0 ]

[]

[]

[ "javascript", "reactjs", "styled_components" ]

[ "Add your python to path and try running command in command prompt.\n", "try to run\npython -m pip install -U pip\npython -m pip install -U matplotlib\nwhile installing Matplotlib !\n" ]

[ 0, 0 ]

[]

[]

[ "matplotlib", "pip", "python", "python_3.x" ]

[ "<a href=\"/images/img.jpg\" download> By adding this you can download image automatically by just one click\n note: The download attribute is not supported in Edge version 12, IE, Safari 10 (and earlier), or Opera version 12 (and earlier).\n", "You can try this to force download an image.\nHowever you cannot download something that is not on your domain, unless you are using a domain which accepts cross origin requests (Eg:Imgur)\nYou may use the 'download' attribute of HTML5 but still you won't be able to load in cross origin image. \nAlso the below method will support legacy browsers as well\n\n\nfunction forceDownload(link){\r\n var url = link.getAttribute(\"data-href\");\r\n var fileName = link.getAttribute(\"download\");\r\n link.innerText = \"Working...\";\r\n var xhr = new XMLHttpRequest();\r\n xhr.open(\"GET\", url, true);\r\n xhr.responseType = \"blob\";\r\n xhr.onload = function(){\r\n var urlCreator = window.URL || window.webkitURL;\r\n var imageUrl = urlCreator.createObjectURL(this.response);\r\n var tag = document.createElement('a');\r\n tag.href = imageUrl;\r\n tag.download = fileName;\r\n document.body.appendChild(tag);\r\n tag.click();\r\n document.body.removeChild(tag);\r\n link.innerText=\"Download Image\";\r\n }\r\n xhr.send();\r\n}\n<a href=\"#\" data-href='https://i.imgur.com/Mc12OXx.png' download=\"Image.jpg\" onclick='forceDownload(this)'>Download Image</a>\n\n\n\nNote: You cannot force the browser to show a 'Save As' dialog as it is based upon what the user preferences are.\n", "Try this\n<img src=\"{{ $thumb }}\" class=\"img-responsive\"> \n<a href=\"{{ $thumb }}\" class=\"btn btn-primary\" download> \n Download Image\n</a>\n\n", "Another option is using the fetch methods\nfunction downloadFile(elmnt) {\n \n const link = elmnt\n const url = 'https://assets.ctfassets.net/cfexf643femz/8rnHaKLBl6L4t1LmuV0OG/03d7ee1d08119fce2a3f80b93b97ab05/Lagos_de_Torca_en_cifras.pdf'\nconst options = {\n 'Accept': 'application/json',\n 'Content-Type': 'application/json'\n};\n \n fetch(url, options)\n .then( response => {\n response.blob().then(blob => {\n let url = window.URL.createObjectURL(blob);\n let a = document.createElement('a');\n a.href = url;\n a.download = \"file.pdf\";\n a.click();\n });\n }); \n}\n\nhttps://codepen.io/edgarv09/pen/KKabVob example\n", "Based on the selected answer above by Jones Joseph, I modified his code to not require an anchor tag in the html to link from. Rather I used a button and in AngularJS passed the name of the photo file as a parameter to ng-click.\nThe HTML\n<button ng-click=\"MainController.newDownload(MainController.oPhoto.filename)\">Download Photo</button>\n\nThe JavaScript:\n this.newDownload = function(filename){\n var url = 'photos/' + filename\n var xhr = new XMLHttpRequest();\n xhr.open(\"GET\", url, true);\n xhr.responseType = \"blob\";\n xhr.onload = function(){\n var urlCreator = window.URL || window.webkitURL;\n var imageUrl = urlCreator.createObjectURL(this.response);\n var tag = document.createElement('a');\n tag.href = imageUrl;\n tag.download = filename;\n document.body.appendChild(tag);\n tag.click();\n document.body.removeChild(tag);\n link.innerText=\"Download Image\";\n }\n xhr.send();\n }\n\nWorks in Chrome 107.0.5304.122 (Official Build) (64-bit)\n" ]

[ 1, 1, 0, 0, 0 ]

[]

[]

[ "html", "image" ]

[ "As mentioned in the comments, it looks like the AVG function is missing a closing parenthesis.\nSELECT first_name, \n last_name \nFROM hr.empolyees \nWHERE MONTHS_BETWEEN(sysdate, hire_date) < (SELECT AVG(MONTHS_BETWEEN(sysdate, hire_date)) FROM hr.employees)\n\n" ]

[ 0 ]

[ "To rewrite the query correctly, you can use the AVG function in the SELECT clause to calculate the average work experience, and then use the HAVING clause to filter the result set to include only employees whose work experience is below the average.\nThe modified query would look like this:\nSELECT first_name, last_name\nFROM hr.employees\nGROUP BY first_name, last_name\nHAVING MONTHS_BETWEEN(sysdate, hire_date) < AVG(MONTHS_BETWEEN(sysdate, hire_date))\nIn this query, the AVG function is used in the SELECT clause to calculate the average work experience of all employees in the HR.EMPLOYEES table. The HAVING clause is then used to filter the result set to include only those employees whose work experience is less than the average.\nNote that the GROUP BY clause is used to group the rows by first_name and last_name, so that the AVG function calculates the average work experience for each employee. This is necessary because the HAVING clause operates on the grouped rows, not on the individual rows in the table.\nIf you want to include only employees whose work experience is strictly less than the average (not equal to the average), you can use the < operator in the HAVING clause instead of the <= operator. For example:\nSELECT first_name, last_name\nFROM hr.employees\nGROUP BY first_name, last_name\nHAVING MONTHS_BETWEEN(sysdate, hire_date) < AVG(MONTHS_BETWEEN(sysdate, hire_date))\nThis query will return a list of employees whose work experience in the company is strictly below the average.\nEDIT\nSELECT first_name, last_name FROM hr.employees WHERE MONTHS_BETWEEN(sysdate, hire_date) < (SELECT AVG(MONTHS_BETWEEN(sysdate, hire_date)) FROM hr.employees)\nIn this query, the subquery in the SELECT clause calculates the average work experience for all employees in the HR.EMPLOYEES table. The outer query then uses the result of this subquery to filter the result set to include only those employees whose work experience is less than the average.\nNote that the subquery must be enclosed in parentheses, and it must be followed by the < operator in the WHERE clause. This is necessary to ensure that the subquery is executed first, and the result is used to filter the result set of the outer query.\nIf you want to include only employees whose work experience is strictly less than the average (not equal to the average), you can use the < operator in the WHERE clause instead of the <= operator. For example:\nSELECT first_name, last_name FROM hr.employees WHERE MONTHS_BETWEEN(sysdate, hire_date) < (SELECT AVG(MONTHS_BETWEEN(sysdate, hire_date)) FROM hr.employees)\nThis query will return a list of employees whose work experience in the company is strictly below the average.\n" ]

[ -1 ]

[ "oracle", "sql" ]

[ "You can use the send method provided by SocketManager to send messages to the client.\nHere is an example of how you can modify your code to send random numbers to the client:\nfrom fastapi import FastAPI\nfrom fastapi_socketio import SocketManager\nimport uvicorn\nimport random\n\napp = FastAPI()\nsio = SocketManager(app=app)\n\n@sio.on('connect')\nasync def connected(sid):\n while True:\n random_number = random.randint(1, 100)\n print(f\"Sending number: {random_number}\")\n await sio.send(sid, random_number)\n await asyncio.sleep(1)\n\nuvicorn.run(\"fastapitest:app\", host='0.0.0.0', port=8000,reload=True)\n\n" ]

[ 0 ]

[]

[]

[ "angular", "python", "socket.io" ]

[ "I have updated this answer. I like the idea of using a match better, but it is slower:\n\n\nconsole.log((\"str1,str2,str3,str4\".match(/,/g) || []).length); //logs 3\n\nconsole.log((\"str1,str2,str3,str4\".match(new RegExp(\"str\", \"g\")) || []).length); //logs 4\n\n\n\nUse a regular expression literal if you know what you are searching for beforehand, if not you can use the RegExp constructor, and pass in the g flag as an argument.\nmatch returns null with no results thus the || []\nThe original answer I made in 2009 is below. It creates an array unnecessarily, but using a split is faster (as of September 2014). I'm ambivalent, if I really needed the speed there would be no question that I would use a split, but I would prefer to use match.\nOld answer (from 2009):\nIf you're looking for the commas:\n(mainStr.split(\",\").length - 1) //3\n\nIf you're looking for the str\n(mainStr.split(\"str\").length - 1) //4\n\nBoth in @Lo's answer and in my own silly performance test split comes ahead in speed, at least in Chrome, but again creating the extra array just doesn't seem sane.\n", "There are at least five ways. The best option, which should also be the fastest (owing to the native RegEx engine) is placed at the top.\nMethod 1\n(\"this is foo bar\".match(/o/g)||[]).length;\n// returns 2\n\nMethod 2\n\"this is foo bar\".split(\"o\").length - 1;\n// returns 2\n\nSplit not recommended as it is resource hungry. It allocates new instances of 'Array' for each match. Don't try it for a >100MB file via FileReader. You can observe the exact resource usage using Chrome's profiler option.\nMethod 3\n var stringsearch = \"o\"\n ,str = \"this is foo bar\";\n for(var count=-1,index=-2; index != -1; count++,index=str.indexOf(stringsearch,index+1) );\n// returns 2\n\nMethod 4\nSearching for a single character\n var stringsearch = \"o\"\n ,str = \"this is foo bar\";\n for(var i=count=0; i<str.length; count+=+(stringsearch===str[i++]));\n // returns 2\n\nMethod 5\nElement mapping and filtering. This is not recommended due to its overall resource preallocation rather than using Pythonian 'generators':\n var str = \"this is foo bar\"\n str.split('').map( function(e,i){ if(e === 'o') return i;} )\n .filter(Boolean)\n //>[9, 10]\n [9, 10].length\n // returns 2\n\nShare:\nI made this gist, with currently 8 methods of character-counting, so we can directly pool and share our ideas - just for fun, and perhaps some interesting benchmarks :)\n", "Add this function to sting prototype :\nString.prototype.count=function(c) { \n var result = 0, i = 0;\n for(i;i<this.length;i++)if(this[i]==c)result++;\n return result;\n};\n\nusage:\nconsole.log(\"strings\".count(\"s\")); //2\n\n", "Simply, use the split to find out the number of occurrences of a character in a string.\nmainStr.split(',').length // gives 4 which is the number of strings after splitting using delimiter comma\nmainStr.split(',').length - 1 // gives 3 which is the count of comma\n", "A quick Google search got this (from http://www.codecodex.com/wiki/index.php?title=Count_the_number_of_occurrences_of_a_specific_character_in_a_string#JavaScript)\nString.prototype.count=function(s1) { \n return (this.length - this.replace(new RegExp(s1,\"g\"), '').length) / s1.length;\n}\n\nUse it like this:\ntest = 'one,two,three,four'\ncommas = test.count(',') // returns 3\n\n", "You can also rest your string and work with it like an array of elements using\n\nArray.prototype.filter()\n\n\n\nconst mainStr = 'str1,str2,str3,str4';\r\nconst commas = [...mainStr].filter(l => l === ',').length;\r\n\r\nconsole.log(commas);\n\n\n\nOr \n\nArray.prototype.reduce()\n\n\n\nconst mainStr = 'str1,str2,str3,str4';\r\nconst commas = [...mainStr].reduce((a, c) => c === ',' ? ++a : a, 0);\r\n\r\nconsole.log(commas);\n\n\n\n", "UPDATE: This might be simple, but it is not the fastest. See benchmarks below.\n\nIt's amazing that in 13 years, this answer hasn't shown up. Intuitively, it seems like it should be fastest:\nconst s = \"The quick brown fox jumps over the lazy dog.\";\nconst oCount = s.length - s.replaceAll('o', '').length;\n\nIf there are only two kinds of character in the string, then this is faster still:\n\nconst s = \"001101001\";\nconst oneCount = s.replaceAll('0', '').length;\n\n\nBENCHMARKS\nconst { performance } = require('node:perf_hooks');\n\nconst ITERATIONS = 10000000;\nconst TEST_STRING = \"The quick brown fox jumps over the lazy dog.\";\n\nconsole.log(ITERATIONS, \"iterations\");\n\nlet sum = 0; // make sure compiler doesn't optimize code out\nlet start = performance.now();\nfor (let i = 0; i < ITERATIONS; ++i) {\n sum += TEST_STRING.length - TEST_STRING.replaceAll('o', '').length;\n}\nlet end = performance.now();\nconsole.log(\" replaceAll duration\", end - start, `(sum ${sum})`);\n\nsum = 0;\nstart = performance.now();\nfor (let i = 0; i < ITERATIONS; ++i) {\n sum += TEST_STRING.split('o').length - 1\n}\nend = performance.now();\nconsole.log(\" split duration\", end - start, `(sum ${sum})`);\n\n10000 iterations\n replaceAll duration 2.6167500019073486 (sum 40000)\n split duration 2.0777920186519623 (sum 40000)\n100000 iterations\n replaceAll duration 17.563208997249603 (sum 400000)\n split duration 8.087624996900558 (sum 400000)\n1000000 iterations\n replaceAll duration 128.71587499976158 (sum 4000000)\n split duration 64.15841698646545 (sum 4000000)\n10000000 iterations\n replaceAll duration 1223.3415840268135 (sum 40000000)\n split duration 629.1629169881344 (sum 40000000)\n\n", "Here is a similar solution, but it uses Array.prototype.reduce \nfunction countCharacters(char, string) {\n return string.split('').reduce((acc, ch) => ch === char ? acc + 1: acc, 0)\n}\n\nAs was mentioned, String.prototype.split works much faster than String.prototype.replace.\n", "If you are using lodash, the _.countBy method will do this:\n_.countBy(\"abcda\")['a'] //2\n\nThis method also work with array:\n_.countBy(['ab', 'cd', 'ab'])['ab'] //2\n\n", "ok, an other one with regexp - probably not fast, but short and better readable then others, in my case just '_' to count\nkey.replace(/[^_]/g,'').length\n\njust remove everything that does not look like your char \nbut it does not look nice with a string as input\n", "I have found that the best approach to search for a character in a very large string (that is 1 000 000 characters long, for example) is to use the replace() method.\nwindow.count_replace = function (str, schar) {\n return str.length - str.replace(RegExp(schar), '').length;\n};\n\nYou can see yet another JSPerf suite to test this method along with other methods of finding a character in a string.\n", "Performance of Split vs RegExp\n\n\nvar i = 0;\r\n\r\nvar split_start = new Date().getTime();\r\nwhile (i < 30000) {\r\n \"1234,453,123,324\".split(\",\").length -1;\r\n i++;\r\n}\r\nvar split_end = new Date().getTime();\r\nvar split_time = split_end - split_start;\r\n\r\n\r\ni= 0;\r\nvar reg_start = new Date().getTime();\r\nwhile (i < 30000) {\r\n (\"1234,453,123,324\".match(/,/g) || []).length;\r\n i++;\r\n}\r\nvar reg_end = new Date().getTime();\r\nvar reg_time = reg_end - reg_start;\r\n\r\nalert ('Split Execution time: ' + split_time + \"\\n\" + 'RegExp Execution time: ' + reg_time + \"\\n\");\n\n\n\n", "I made a slight improvement on the accepted answer, it allows to check with case-sensitive/case-insensitive matching, and is a method attached to the string object:\nString.prototype.count = function(lit, cis) {\n var m = this.toString().match(new RegExp(lit, ((cis) ? \"gi\" : \"g\")));\n return (m != null) ? m.length : 0;\n}\n\nlit is the string to search for ( such as 'ex' ), and cis is case-insensitivity, defaulted to false, it will allow for choice of case insensitive matches.\n\nTo search the string 'I love StackOverflow.com' for the lower-case letter 'o', you would use:\nvar amount_of_os = 'I love StackOverflow.com'.count('o');\n\namount_of_os would be equal to 2.\n\nIf we were to search the same string again using case-insensitive matching, you would use:\nvar amount_of_os = 'I love StackOverflow.com'.count('o', true);\n\nThis time, amount_of_os would be equal to 3, since the capital O from the string gets included in the search.\n", "Easiest way i found out...\nExample-\nstr = 'mississippi';\n\nfunction find_occurences(str, char_to_count){\n return str.split(char_to_count).length - 1;\n}\n\nfind_occurences(str, 'i') //outputs 4\n\n", "I just did a very quick and dirty test on repl.it using Node v7.4. For a single character, the standard for loop is quickest:\nSome code:\n// winner!\nfunction charCount1(s, c) {\n let count = 0;\n c = c.charAt(0); // we save some time here\n for(let i = 0; i < s.length; ++i) {\n if(c === s.charAt(i)) {\n ++count;\n }\n }\n return count;\n}\n\nfunction charCount2(s, c) {\n return (s.match(new RegExp(c[0], 'g')) || []).length;\n}\n\nfunction charCount3(s, c) {\n let count = 0;\n for(ch of s) {\n if(c === ch) {\n ++count;\n }\n }\n return count;\n}\n\nfunction perfIt() {\n const s = 'Hello, World!';\n const c = 'o';\n\n console.time('charCount1');\n for(let i = 0; i < 10000; i++) {\n charCount1(s, c);\n }\n console.timeEnd('charCount1');\n \n console.time('charCount2');\n for(let i = 0; i < 10000; i++) {\n charCount2(s, c);\n }\n console.timeEnd('charCount2');\n \n console.time('charCount3');\n for(let i = 0; i < 10000; i++) {\n charCount2(s, c);\n }\n console.timeEnd('charCount3');\n}\n\nResults from a few runs:\nperfIt()\ncharCount1: 3.301ms\ncharCount2: 11.652ms\ncharCount3: 174.043ms\nundefined\n\nperfIt()\ncharCount1: 2.110ms\ncharCount2: 11.931ms\ncharCount3: 177.743ms\nundefined\n\nperfIt()\ncharCount1: 2.074ms\ncharCount2: 11.738ms\ncharCount3: 152.611ms\nundefined\n\nperfIt()\ncharCount1: 2.076ms\ncharCount2: 11.685ms\ncharCount3: 154.757ms\nundefined\n\nUpdate 2021-Feb-10: Fixed typo in repl.it demo\nUpdate 2020-Oct-24: Still the case with Node.js 12 (play with it yourself here)\n", "Here is my solution. Lots of solution already posted before me. But I love to share my view here.\nconst mainStr = 'str1,str2,str3,str4';\n\nconst commaAndStringCounter = (str) => {\n const commas = [...str].filter(letter => letter === ',').length;\n const numOfStr = str.split(',').length;\n\n return `Commas: ${commas}, String: ${numOfStr}`;\n}\n\n// Run the code\nconsole.log(commaAndStringCounter(mainStr)); // Output: Commas: 3, String: 4\n\nHere you find my REPL\n", "s = 'dir/dir/dir/dir/'\nfor(i=l=0;i<s.length;i++)\nif(s[i] == '/')\nl++\n\n", "I was working on a small project that required a sub-string counter. Searching for the wrong phrases provided me with no results, however after writing my own implementation I have stumbled upon this question. Anyway, here is my way, it is probably slower than most here but might be helpful to someone:\nfunction count_letters() {\nvar counter = 0;\n\nfor (var i = 0; i < input.length; i++) {\n var index_of_sub = input.indexOf(input_letter, i);\n\n if (index_of_sub > -1) {\n counter++;\n i = index_of_sub;\n }\n}\n\nhttp://jsfiddle.net/5ZzHt/1/\nPlease let me know if you find this implementation to fail or do not follow some standards! :)\nUPDATE\nYou may want to substitute:\n for (var i = 0; i < input.length; i++) {\n\nWith:\nfor (var i = 0, input_length = input.length; i < input_length; i++) {\n\nInteresting read discussing the above:\nhttp://www.erichynds.com/blog/javascript-length-property-is-a-stored-value\n", "UPDATE 06/10/2022\nSo I ran various perf tests and if your use case allows it, it seems that using split is going to perform the best overall.\n\nfunction countChar(char: string, string: string): number {\n\n return string.split(char).length - 1\n\n}\n\ncountChar('x', 'foo x bar x baz x')\n\n\n\nI know I am late to the party here but I was rather baffled no one answered this with the most basic of approaches. A large portion of the answers provided by the community for this question are iteration based but all are moving over strings on a per-character basis which is not really efficient.\nWhen dealing with a large string that contains thousands of characters walking over each character to get the occurance count can become rather extraneous not to mention a code-smell. The below solutions take advantage of slice, indexOf and the trusted traditional while loop. These approaches prevent us having to walk over each character and will greatly speed up the time it takes to count occurances. These follow similar logic to that you'd find in parsers and lexical analyzers that require string walks.\nUsing with Slice\nIn this approach we are leveraging slice and with every indexOf match we will move our way through the string and eliminate the previous searched potions. Each time we call indexOf the size of the string it searches will be smaller.\nfunction countChar (char: string, search: string): number {\n \n let num: number = 0;\n let str: string = search;\n let pos: number = str.indexOf(char);\n \n while(pos > -1) {\n str = str.slice(pos + 1);\n pos = str.indexOf(char);\n num++;\n }\n\n return num;\n\n}\n\n// Call the function\ncountChar('x', 'foo x bar x baz x') // 3\n\n\nUsing with IndexOf from position\nSimilar to the first approach using slice but instead of augmenting the string we are searching it will leverage the from parameter in indexOf method.\nfunction countChar (char: string, str: string): number {\n \n let num: number = 0;\n let pos: number = str.indexOf(char);\n \n while(pos > -1) {\n pos = str.indexOf(char, pos + 1);\n num++;\n }\n\n return num;\n\n}\n\n// Call the function\ncountChar('x', 'foo x bar x baz x') // 3\n\n\nPersonally, I go for the second approach over the first, but both are fine and performant when dealing with large strings but also smaller sized ones too.\n", "What about string.split(desiredCharecter).length-1\nExample:\nvar str = \"hellow how is life\";\nvar len = str.split(\"h\").length-1; will give count 2 for character \"h\" in the above string;\n", "The fastest method seems to be via the index operator:\n\n\nfunction charOccurances (str, char)\r\n{\r\n for (var c = 0, i = 0, len = str.length; i < len; ++i)\r\n {\r\n if (str[i] == char)\r\n {\r\n ++c;\r\n }\r\n }\r\n return c;\r\n}\r\n\r\nconsole.log( charOccurances('example/path/script.js', '/') ); // 2\n\n\n\nOr as a prototype function:\n\n\nString.prototype.charOccurances = function (char)\r\n{\r\n for (var c = 0, i = 0, len = this.length; i < len; ++i)\r\n {\r\n if (this[i] == char)\r\n {\r\n ++c;\r\n }\r\n }\r\n return c;\r\n}\r\n\r\nconsole.log( 'example/path/script.js'.charOccurances('/') ); // 2\n\n\n\n", "function len(text,char){\n\nreturn text.innerText.split(string).length\n}\n\nconsole.log(len(\"str1,str2,str3,str4\",\",\"))\n\nThis is a very short function.\n", "The following uses a regular expression to test the length. testex ensures you don't have 16 or greater consecutive non-comma characters. If it passes the test, then it proceeds to split the string. counting the commas is as simple as counting the tokens minus one.\nvar mainStr = \"str1,str2,str3,str4\";\nvar testregex = /([^,]{16,})/g;\nif (testregex.test(mainStr)) {\n alert(\"values must be separated by commas and each may not exceed 15 characters\");\n} else {\n var strs = mainStr.split(',');\n alert(\"mainStr contains \" + strs.length + \" substrings separated by commas.\");\n alert(\"mainStr contains \" + (strs.length-1) + \" commas.\");\n}\n\n", "I'm using Node.js v.6.0.0 and the fastest is the one with index (the 3rd method in Lo Sauer's answer).\nThe second is:\n\n\nfunction count(s, c) {\r\n var n = 0;\r\n for (let x of s) {\r\n if (x == c)\r\n n++;\r\n }\r\n return n;\r\n}\n\n\n\n", "Here's one just as fast as the split() and the replace methods, which are a tiny bit faster than the regex method (in Chrome and Firefox both).\nlet num = 0;\nlet str = \"str1,str2,str3,str4\";\n//Note: Pre-calculating `.length` is an optimization;\n//otherwise, it recalculates it every loop iteration.\nlet len = str.length;\n//Note: Don't use a `for (... of ...)` loop, it's slow!\nfor (let charIndex = 0; charIndex < len; ++charIndex) {\n if (str[charIndex] === ',') {\n ++num;\n }\n}\n\n", "And there is:\nfunction character_count(string, char, ptr = 0, count = 0) {\n while (ptr = string.indexOf(char, ptr) + 1) {count ++}\n return count\n}\n\nWorks with integers too!\n", "\n\nvar mainStr = \"str1,str2,str3,str4\";\nvar splitStr = mainStr.split(\",\").length - 1; // subtracting 1 is important!\nalert(splitStr);\n\n\n\nSplitting into an array gives us a number of elements, which will always be 1 more than the number of instances of the character. This may not be the most memory efficient, but if your input is always going to be small, this is a straight-forward and easy to understand way to do it.\nIf you need to parse very large strings (greater than a few hundred characters), or if this is in a core loop that processes large volumes of data, I would recommend a different strategy.\n", "My solution:\nfunction countOcurrences(str, value){\n var regExp = new RegExp(value, \"gi\");\n return str.match(regExp) ? str.match(regExp).length : 0; \n}\n\n", "The fifth method in Leo Sauers answer fails, if the character is on the beginning of the string.\ne.g.\nvar needle ='A',\n haystack = 'AbcAbcAbc';\n\nhaystack.split('').map( function(e,i){ if(e === needle) return i;} )\n .filter(Boolean).length;\n\nwill give 2 instead of 3, because the filter funtion Boolean gives false for 0.\nOther possible filter function:\nhaystack.split('').map(function (e, i) {\n if (e === needle) return i;\n}).filter(function (item) {\n return !isNaN(item);\n}).length;\n\none more answer:\nfunction count(string){\n const count={}\n \n string.split('').forEach(char=>{\n count[char] = count[char] ? (count[char]+1) : 1;\n })\n \n return count\n}\n\nconsole.log(count(\"abfsdfsddsfdfdsfdsfdsfda\"))\n\n", "I know this might be an old question but I have a simple solution for low-level beginners in JavaScript. \nAs a beginner, I could only understand some of the solutions to this question so I used two nested FOR loops to check each character against every other character in the string, incrementing a count variable for each character found that equals that character.\nI created a new blank object where each property key is a character and the value is how many times each character appeared in the string(count).\nExample function:-\nfunction countAllCharacters(str) {\n var obj = {};\n if(str.length!==0){\n for(i=0;i<str.length;i++){\n var count = 0;\n for(j=0;j<str.length;j++){\n if(str[i] === str[j]){\n count++;\n }\n }\n if(!obj.hasOwnProperty(str[i])){\n obj[str[i]] = count;\n }\n }\n }\n return obj;\n}\n\n", "I believe you will find the below solution to be very short, very fast, able to work with very long strings, able to support multiple character searches, error proof, and able to handle empty string searches.\nfunction substring_count(source_str, search_str, index) {\n source_str += \"\", search_str += \"\";\n var count = -1, index_inc = Math.max(search_str.length, 1);\n index = (+index || 0) - index_inc;\n do {\n ++count;\n index = source_str.indexOf(search_str, index + index_inc);\n } while (~index);\n return count;\n}\n\nExample usage:\n\n\nconsole.log(substring_count(\"Lorem ipsum dolar un sit amet.\", \"m \"))\r\n\r\nfunction substring_count(source_str, search_str, index) {\r\n source_str += \"\", search_str += \"\";\r\n var count = -1, index_inc = Math.max(search_str.length, 1);\r\n index = (+index || 0) - index_inc;\r\n do {\r\n ++count;\r\n index = source_str.indexOf(search_str, index + index_inc);\r\n } while (~index);\r\n return count;\r\n}\n\n\n\nThe above code fixes the major performance bug in Jakub Wawszczyk's that the code keeps on looks for a match even after indexOf says there is none and his version itself is not working because he forgot to give the function input parameters.\n", "var a = \"acvbasbb\";\nvar b= {};\nfor (let i=0;i<a.length;i++){\n if((a.match(new RegExp(a[i], \"g\"))).length > 1){\n b[a[i]]=(a.match(new RegExp(a[i], \"g\"))).length;\n }\n}\nconsole.log(b);\n\nIn javascript you can use above code to get occurrence of a character in a string. \n", "My solution with ramda js:\nconst testString = 'somestringtotest'\n\nconst countLetters = R.compose(\n R.map(R.length),\n R.groupBy(R.identity),\n R.split('')\n)\n\ncountLetters(testString)\n\nLink to REPL.\n", "The function takes string str as parameter and counts occurrence of each unique characters in the string. The result comes in key - value pair for each character. \nvar charFoundMap = {};//object defined\n for (var i = 0; i < str.length; i++) {\n\n if(!charFoundMap[ str[i] ]) {\n charFoundMap[ str[i] ]=1;\n } \n else\n charFoundMap[ str[i] ] +=1;\n //if object does not contain this \n }\n return charFoundMap;\n\n} \n\n", "let str = \"aabgrhaab\"\nlet charMap = {}\n\nfor(let char of text) {\n if(charMap.hasOwnProperty(char)){\n charMap[char]++\n } else {\n charMap[char] = 1\n }\n}\n\nconsole.log(charMap); //{a: 4, b: 2, g: 1, r: 1, h: 1}\n", "There is a very tricky way, but it is in reverse:\nconst sampleStringText = \"/john/dashboard/language\";\n\nAssume the above sample, for counting the number of forward-slashs you can do like this:\nconsole.log( sampleStringText.split('/') - 1 );\n\nSo I recommended to use a function for it (TypeScript):\nconst counter = (sentence: string, char: string): number => sentence.split(char) - 1;\n\n", "\n\nString.prototype.reduce = Array.prototype.reduce;\n\nString.prototype.count = function(c) {\n return this.reduce(((n, x) => n + (x === c ? 1 : 0)), 0)\n};\n\nconst n = \"bugs bunny was here\".count(\"b\")\nconsole.log(n)\n\n\n\nSimilar to the prototype based above, but does not allocate an array for the string. Allocation is the problem of nearly every version above, except the loop variants. This avoids loop code, reusing the browser implemented Array.reduce function.\n" ]

[ 1015, 284, 25, 25, 14, 12, 12, 10, 8, 7, 6, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]

[ "\n\nvar i = 0;\r\n\r\nvar split_start = new Date().getTime();\r\nwhile (i < 30000) {\r\n \"1234,453,123,324\".split(\",\").length -1;\r\n i++;\r\n}\r\nvar split_end = new Date().getTime();\r\nvar split_time = split_end - split_start;\r\n\r\n\r\ni= 0;\r\nvar reg_start = new Date().getTime();\r\nwhile (i < 30000) {\r\n (\"1234,453,123,324\".match(/,/g) || []).length;\r\n i++;\r\n}\r\nvar reg_end = new Date().getTime();\r\nvar reg_time = reg_end - reg_start;\r\n\r\nalert ('Split Execution time: ' + split_time + \"\\n\" + 'RegExp Execution time: ' + reg_time + \"\\n\");\n\n\n\n", "This below is the simplest logic, which is very easy to understand\n //Demo string with repeat char \n let str = \"Coffee\"\n //Splitted the str into an char array for looping\n let strArr = str.split(\"\")\n //This below is the final object which holds the result\n let obj = {};\n //This loop will count char (You can also use traditional one for loop)\n strArr.forEach((value,index)=>{\n //If the char exists in the object it will simple increase its value\n if(obj[value] != undefined)\n {\n obj[value] = parseInt(obj[value]) + 1;\n }//else it will add the new one with initializing 1\n else{\n obj[value] =1;\n } \n });\n\n console.log(\"Char with Count:\",JSON.stringify(obj)); //Char with Count:{\"C\":1,\"o\":1,\"f\":2,\"e\":2}\n\n" ]

[ -1, -1 ]

[ "javascript", "string" ]

[ "So using chatGPT I found the ans I was looking for\nfilteredUser = allLocation.filter(id__in=[allLocation[i].id for i in UserIndex]) \n" ]

[ 0 ]

[]

[]

[ "django", "django_models", "django_queryset", "python" ]

[ "Briefly\nYou can combine fig and img side-by-side as follows:\nimage_append( c( fig, img ))\n\nReference\nSee the section, Combining, at https://rdrr.io/cran/magick/f/vignettes/intro.Rmd, also shown below:\nrequire( magick )\n\nbigdata <- image_read('https://jeroen.github.io/images/bigdata.jpg')\nfrink <- image_read(\"https://jeroen.github.io/images/frink.png\")\n\n# Appending means simply putting the frames next to each other:\nimage_append(image_scale(img, \"x200\"))\n\n# Use stack = TRUE to position them on top of each other:\nimage_append(image_scale(img, \"100\"), stack = TRUE)\n\n# Composing allows for combining two images on a specific position:\n# It also and flattens the image, losing information about which pixel came from\n# which layer.\n\nbigdatafrink <- image_scale(\n image_rotate(\n image_background( frink, \"none\" ), 300\n )\n , \"x200\"\n)\n\nimage_composite(\n image_scale( bigdata, \"x400\" )\n , bigdatafrink\n , offset = \"+180+100\"\n)\n\n\n" ]

[ 0 ]

[]

[]

[ "ggplot2", "imagemagick", "r" ]

[ "Please use snapshot.hasData() to make sure you have data. You can refer this flutter documentation. I can give very basic sample :\nFutureBuilder(\n  builder: (ctx, snapshot) {\n    if (snapshot.connectionState == ConnectionState.done) {\n      if (snapshot.hasError) {\n //have an error\n      } else if (snapshot.hasData) {\n       //sure there is data\n      }\n    } \n  ),\n\n" ]

[ 0 ]

[]

[]

[ "dart", "flutter", "sql" ]

[ "(Spyder maintainer here) You said\n\nAny advice on how to run such code without selecting it first?\n\nYes, you need to use cells for that. You can create a cell by inserting a comment that starts with # %%, like this\nimport pandas as pd\n\n# %%\ncars = {'Brand': ['Honda', 'Ford','Audi'],\n 'Price': [20000, 30000, 40000]}\n\nThat will allow you to run the piece of code enclosed by those comments with the keyboard shortcuts Shift + Enter (run current cell and advance to the next one); or Control + Enter (run current cell and stay on it).\nIf that explanation was not clear enough, you can learn more about cells in our docs.\n", "This would be absolutely fantastic if it worked, but it doesn't. I'm guessing there must be a setting that needs to be changed first that everyone fails to mention\n" ]

[ 1, 0 ]

[]

[]

[ "keyboard_shortcuts", "python", "r", "spyder" ]

[ "I think you need to add a backslash before the dot in your regular expression pattern to escape it, so it's treated as a literal dot and not a special character that matches any character.\nIn your code, you can try using the re.escape() method from the re module to escape all special characters in the keywords list before joining them in the pattern. Here's an example:\nimport re\n\nkeywords = [' b.o.o', ' a.b.a', ' titi']\n\n# Escape special characters in the keywords using re.escape()\nescaped_keywords = [re.escape(keyword) for keyword in keywords]\n\n# Join the escaped keywords with '|' as the separator\npattern = '(' + '|'.join(escaped_keywords) + ')'\n\n# Use the pattern in your regexp_extract_all() call\ndf.withColumn('words', F.expr(f\"regexp_extract_all(colB, '{pattern}' ,1)\"))\n\n\nThis should give you the expected output where only exact matches are extracted.\n", "You can use the \\b word boundary metacharacter to match whole words only, and escape the dots with a backslash \\. in your regular expression.\nHere is an example:\nimport pyspark.sql.functions as F\n\nkeywords = [' b.o.o', ' a.b.a', ' titi']\n\n# Escape dots and add word boundaries\npattern = '(' + '|'.join([fr'\\b({k.replace(\".\", \"\\\\.\")})\\b' for k in keywords]) + ')'\n\ndf.withColumn('words', F.expr(f\"regexp_extract_all(colB, '{pattern}' ,1)))\n\nThis will match b.o.o, a.b.a, and titi as whole words, and will not match substrings like awbwa.\n", "I finally figure it out, for some reason re.escape doesnt work, the solution was to add [] in between dots. thanks for answering !\n" ]

[ 0, 0, 0 ]

[]

[]

[ "apache_spark", "extract", "pyspark", "python", "regex" ]

[ "You seem to have an indentation error:\nasync def on_message(message):\n if message.author == client.user:\n return\n\n if message.content.startswith('$hello'):\n channel = message.channel\n await channel.send('Hello!')\n\nThe last if-statement is never going to be executed. Instead, move it one indentation back such that:\nasync def on_message(message):\n if message.author == client.user:\n return\n\n if message.content.startswith('$hello'):\n channel = message.channel\n await channel.send('Hello!')\n\n", "There are a few potential issues with the code that could be causing the Discord bot not to respond to commands.\nFirst, the on_message event handler function is indented incorrectly. The if statement that checks if the message starts with '$hello' should be at the same indentation level as the on_message function, not indented further. This is because the return statement that is indented further will cause the function to return immediately, without checking the if statement or sending a response.\nHere is an example of how the on_message function should be indented:\n@client.event\nasync def on_message(message): \nif message.author == client.user:\n return\n\nif message.content.startswith('$hello'):\n channel = message.channel\n await channel.send('Hello!')\n\nAnother potential issue is that the TOKEN environment variable is not being set. The os.getenv function is used to get the value of the TOKEN environment variable, but if this variable is not set, the os.getenv function will return None, and the client.run function will not be able to authenticate the bot.\nTo fix this issue, you can set the TOKEN environment variable to the bot token that you obtained from the Discord Developer Portal. This can be done in a variety of ways, depending on your operating system and the method that you prefer to use.\n" ]

[ 0, 0 ]

[]

[]

[ "discord.py", "python" ]

[ "the correction is\ntype: mongoose.Schema.Types.Object.Id, \n\nand not the below one where ID is uppercase, it should be lowercase\ntype: mongoose.Schema.Types.Object*ID*,\n\n", "type: mongoose.Schema.Types.ObjectID - is not correct\nit must be\ntype: mongoose.Schema.Types.ObjectId\nMongoose schema does not recognize ObjectID\n" ]

[ 1, 0 ]

[ "You have an extra comma in your code, look:\nvar postSchema = new mongoose.Schema({\n title: String,\n content: String, ----> You need to get rid of it\n});\n\nThis should solve the problem.\n" ]

[ -1 ]

[ "cloud9_ide", "javascript", "mongoose", "node.js" ]

[ "Can be solved by resetting package configuration by force reinstall of numpy.\nconda install numpy --force-reinstall\n\n", "I was able to fix it by running the following commands to uninstall and reinstall the packages\npip uninstall matplotlib\npip uninstall pillow\npip uninstall numpy\npip install matplotlib\npip install pillow\npip install numpy\n\n", "Thanks for help! I used this:\nI was able to fix it by running the following commands to uninstall and reinstall the packages\npip uninstall matplotlib\npip uninstall pillow\npip uninstall numpy\npip install matplotlib\npip install pillow\npip install numpy\n" ]

[ 4, 3, 0 ]

[]

[]

[ "jupyter_notebook", "python" ]

[ "EC2 instances are just virtual machines in the cloud, and like physical machines, they need storage to store the operating system and application data. By default, EC2 instances come with instance store storage, which is temporary storage that is tied to the life of the instance. This means that if the instance is stopped or terminated, the data in the instance store storage will be lost.\nEBS volumes, on the other hand, are persistent storage options that are separate from the EC2 instance. This means that the data in an EBS volume will persist even if the EC2 instance is stopped or terminated. EBS volumes can be attached to EC2 instances and used as the primary storage for the operating system and application data.\nEBS volumes are useful for a variety of use cases, including:\n\nStoring data that needs to be retained even if the EC2 instance is\nstopped or terminated.\nStoring data that needs to be accessed by multiple EC2 instances.\nCreating snapshots of the EBS volume for data backup and disaster recovery.\nMigrating data between EC2 instances or across regions.\n\nIn summary, EBS volumes provide persistent storage for EC2 instances and are used for a variety of data storage and data management tasks.\n" ]

[ 2 ]

[]

[]

[ "amazon_ebs", "amazon_ec2", "amazon_web_services" ]

[ "It looks like the issue is with the PyPDF2 library. The getPage() method is not able to extract the text from some pages in the PDF file, resulting in an error.\nOne solution could be to use the PyMuPDF library instead, which is a more powerful PDF manipulation library. You can install it using the following command:\npip install PyMuPDF\n\nYou can then use the text() method from the PyMuPDF library to extract the text from each page in the PDF file. Here is an example of how your code could look like using the PyMuPDF library:\n# Importing Libraries\n# Importing Google Text to Speech library\nfrom gtts import gTTS\n\n# Importing PDF reader PyMuPDF\nimport fitz\n\n# Open file Path\npdf_File = open('simple.pdf', 'rb')\n\n# Create PDF Reader Object\npdf_Reader = fitz.open(pdf_File)\ncount = pdf_Reader.page_count # counts number of pages in pdf\ntextList = []\n\n# Extracting text data from each page of the pdf file\nfor i in range(count):\n page = pdf_Reader[i]\n textList.append(page.get_text('text'))\n\n# Converting multiline text to single line text\ntextString = \" \".join(textList)\n\nprint(textString)\n\n# Set language to english (en)\nlanguage = 'en'\n\n# Call GTTS\nmyAudio = gTTS(text=textString, lang=language, slow=False)\n\n# Save as mp3 file\nmyAudio.save(\"Audio.mp3\")\n\nThis should fix the errors you were getting and allow you to extract the text from all pages in the PDF file.\n" ]

[ 0 ]

[]

[]

[ "gtts", "python" ]

[ "In the first code, you have declared a vector named \"matri\" inside the loop, which is used to store the values of a single row of the matrix. Then, this vector is pushed into the \"stuff\" vector, which is a 2D vector. In this way, the values of the matrix are stored in the 2D vector.\nIn the second code, you have declared a vector named \"mat\" outside the loop. Every time the loop iterates, the values of the current row are pushed into this vector. But since this vector is not declared inside the loop, it retains the values of the previous rows as well. So, when you push this vector into the \"stuff\" vector, it contains the values of all the rows, including the values of the previous rows.\nTherefore, it is always a good practice to declare a vector inside the loop so that it can store the values of a single row only and not retain the values of the previous rows.\n" ]

[ 0 ]

[]

[]

[ "arrays", "c++" ]

[ "i was able to work around it, or i guess what i've been doing was the work around coz what i should be doing is accessing the show context actions options from the editor now i just do that keybind and press on enter and it just goes. :)\n" ]

[ 1 ]

[]

[]

[ "go", "goland", "jetbrains_ide" ]

[ "I would recommend using a UI Test to do this.\nUsing a UI Test, you could open the settings app and configure this setting by creating an XCUIApplication that targets the Settings app.\nXCUIApplication(bundleIdentifier: \"com.apple.Preferences\")\n\nThen interact with the buttons in Settings to enable/disable button shapes.\nYou could then launch and interact with your app, using the screenshot() method to take screenshots:\nhttps://developer.apple.com/documentation/xctest/xcuiscreenshotproviding/2897250-screenshot\n" ]

[ 0 ]

[]

[]

[ "ios", "swift", "uiaccessibility", "xctest", "xctestcase" ]

[ "There is a function in React Hook Form called reset on successful form submission run reset function. It will clear all the form values.\nExample of working.\n" ]

[ 0 ]

[]

[]

[ "forms", "react_forms" ]

[ "You are recieving a Brotli (br) encoding. Just pass Accept-Encoding header to deflate and the server will return you a json output.\nawait axios.get('https://jsonplaceholder.typicode.com/todos/1', {\n headers: {\n 'Accept-Encoding': 'deflate'\n }\n})\n\n", "You're not doing anything wrong, it's just that axios currently doesn't decompress Brotli-encoded resposes, yet signals Brotli as an acceptable encoding anyway, hence why it looks like garbage. Instead of disabling compression completely, just send the supported encodings axios does support and decompression should be invisible to you\nconst resp = await axios.get('https://jsonplaceholder.typicode.com/todos/1', {\n 'accept-encoding': 'gzip, deflate'\n});\n\n", "There is't any problem with your code and also it gives me exactly the output you required with the code you posted in the question so it must be either other log or some other problem but your code posted in question works fine with below output.\n\n" ]

[ 1, 0, 0 ]

[]

[]

[ "axios", "javascript", "node.js" ]

[ "\nRead both Excel files\nUse the Join Data Tables to merge them by the column that contains the product ID (needs to be unique for sure)\nJoin Type Inner should work\nAnd now you get the both prices\n\nYou could also use pure LINQ, example.\nAt the end it depends on the result you need. So either filter columns or use some advanced comparisons to get Amazon or Ebay as cheapest. But what happens when both have same price? So make sure you also test this one.\n" ]

[ 0 ]

[]

[]

[ "excel", "rpm", "uipath", "uipath_studio" ]

[ "if you want to use grid to do that, you'll need to play with the align-self, and justify-self for the grid-item.\nNow there are several ways to do that with grid, the way you are using it is not the simplest.\nI'm proposing just one here:\n\n\nhtml,\nbody {\n margin: 0;\n padding: 0;\n}\n\n#grid {\n display: grid;\n grid-template-rows: repeat(7, 1fr);\n grid-template-columns: repeat(7, 1fr);\n gap: 0;\n width: 100vw;\n min-height: 100vh;\n}\n\n#div1 {\n grid-area: 1 / 1 / 8 / 8;\n}\n\n#div1 img,\n#div2 img {\n width: 100%;\n height: 100%\n}\n\n#div2 {\n grid-area: 3 / 3 / 6 / 6;\n}\n\n#div3 {\n grid-area: 4 / 4 / 5 / 5;\n align-self: center;\n justify-self: center;\n}\n<div id=\"grid\">\n <div id=\"div1\">\n <img src=\"https://picsum.photos/300/200\">\n </div>\n <div id=\"div2\">\n <img class=\"love-ico\" src=\"https://picsum.photos/300/200\">\n </div>\n <div id=\"div3\">\n <h2>Hello world</h2>\n </div>\n</div>\n\n\n\nNow I don't know if it's mandatory for you to use grid, otherwise the old technic of relative, absolute works too:\n\n\nhtml,\nbody {\n margin: 0;\n padding: 0;\n}\n\n#container {\n position: relative;\n background-image: url(\"https://picsum.photos/300/200\");\n width: 100vw;\n height: 100vh;\n}\n\n#container img {\n position: absolute;\n top: 50%;\n left: 50%;\n transform: translate(-50%, -50%);\n}\n\n#container h2 {\n position: absolute;\n top: 50%;\n left: 50%;\n transform: translate(-50%, -50%);\n}\n<div id=\"container\">\n <img class=\"love-ico\" src=\"https://picsum.photos/300/200\">\n <h2>Hello world</h2>\n</div>\n\n\n\n" ]

[ 0 ]

[]

[]

[ "css", "grid", "html" ]

[ "The easiest fix is to run once:\n!pip install -Iv rpy2==3.4.2\n\nat the start of the Jupyter-notebook in order to rollback to version 3.4.2, where this problem did not occur (see Rpy2 Error depends on execution method: NotImplementedError: Conversion \"rpy2py\" not defined). For more information how to cahge the version of a python package see Rollback to specific version of a python package in Goolge Colab and Installing specific package version with pip)\nIt would still be interesting to understand how one could use the latest version of rpy2 correctly.\n", "This is cause by an issue in older releases of ipykernel. I'd recommend to upgrade it rather than downgrade rpy2.\nSee https://github.com/rpy2/rpy2/issues/952\n" ]

[ 0, 0 ]

[]

[]

[ "jupyter_notebook", "python", "rpy2" ]

[ "Looks like there may have been a breaking change introduced to Python's synchronized regex engine (SRE) with Python 3.11. I have created a ticket for this on the Cassandra project (CASSANDRA-18088).\nIn the interim, downgrade your local Python to 3.10, and you should be fine.\n" ]

[ 0 ]

[]

[]

[ "cassandra", "cassandra_4.0", "cqlsh", "python" ]

[ "in order to add a value to each dataframe based on the filename you need to create a list of values equal to the number of rows. Below is a simple example assuming the dataframes are the same.\nEach sample file I have created looks like this:\nfile1.xlsx\n Some Data\n0 5\n1 3\n2 2\n3 3\n4 6\n5 5\n\nfile2.xlsx\n Some Data\n0 6\n1 8\n2 5\n3 4\n4 5\n5 9\n\nExample code:\nimport pandas as pd, os\n\nsource_folder = r\"\\PATH\\TO\\FILES\"\n\n# Create empty list for the dataframes\ndf_list = []\n\n# Loop though each file in the folder\nfor file in os.listdir(source_folder):\n\n # Create full file path\n file_path = os.path.join(source_folder, file)\n\n # Create dataframe\n x_df = pd.read_excel(file_path)\n\n # Create new dataframe column for filename based on the number of rows in dataframe\n x_df[\"filename\"] = [file for _ in range(x_df.shape[0])]\n\n # Add dataframe to the list\n df_list.append(x_df)\n\n# Concatonate the list of dataframes to a single dataframe\nfinal_df = pd.concat(df_list)\n\nprint(final_df)\n\nThe final result is:\n Some Data filename\n0 5 file1.xlsx\n1 3 file1.xlsx\n2 2 file1.xlsx\n3 3 file1.xlsx\n4 6 file1.xlsx\n5 5 file1.xlsx\n0 6 file2.xlsx\n1 8 file2.xlsx\n2 5 file2.xlsx\n3 4 file2.xlsx\n4 5 file2.xlsx\n5 9 file2.xlsx\n\n" ]

[ 0 ]

[]

[]

[ "python" ]

[ "My code was very similar to what is in the question:\nclass Command(BaseCommand):\n help = \"Check order\"\n\n def add_arguments(self, parser):\n parser.add_argument(\"--order-no\", nargs=\"?\", type=str)\n\n def handle(self, *args, **options):\n order = Orders.objects.get(order_no=options[\"order_no\"])\n print(order)\n\nI figured out by accident that the connection is randomly closed every now and then and it causes InterfaceError. In my case probably some other section of the code uses models on global level or maybe django.setup() is loading module that creates a connection to database, or perhaps connection is kept in memory and re-used between consecutive django calls. (No idea so far, need to dig more).\nBut solution to it was pretty simple, add transaction context manager.\nIt will look like this:\nfrom django.db import transaction \n\n\nclass Command(BaseCommand):\n help = \"Check order\"\n\n def add_arguments(self, parser):\n parser.add_argument(\"--order-no\", nargs=\"?\", type=str)\n\n def handle(self, *args, **options):\n with transaction.atomic():\n order = Orders.objects.get(order_no=options[\"order_no\"])\n print(order)\n\n", "MySQL is lazily connected to Django. If connection.connection is None means you have not connected to MySQL before.\nIf the connection is closed and you try to access the cursor, you will get an InterfaceError. You can close the database connection so that when you use ORM methods Django will reconnect to open a new connection\nI have created a helper reconnect() which we are using in production.\ndef reconnect():\n from django.db import connections\n from logging import getLogger\n \n for alias in list(connections):\n conn = connections[alias]\n if conn.connection and not conn.is_usable():\n conn.close()\n del connections[alias]\n closed.append(alias)\n getLogger(__name__).warn('Closing unusable connections: %s', closed)\n\nI am further attaching a few helpful examples on maintaining database connections healthy\nhttps://www.programcreek.com/python/example/100987/django.db.connection.is_usable\n" ]

[ 1, 0 ]

[]

[]

[ "django", "mysql", "python" ]

[ "I would advise to add one more m:n association to the same tables with a different alias BUT in this case it would be multiplication of too many records and you might end up with out of memory error. So it would be good to get only ids of Content records that satisfy the condition and afterwards to execute one more similar query with the condition against only Content records using given ids.\nconst foundItems = await db.Content.findAll({\n attributes: ['id'],\n include: [{ \n model: db.Category,\n attributes: ['id'],\n where: { id: 7 }\n }],\n})\nconst itemWithAllCategories = db.Content.findAll({\n where: {\n id: foundItems.map(x => x.id)\n },\n include: [{ \n model: db.Category,\n attributes: ['id', 'name', 'type'],\n }],\n})\n\n" ]

[ 0 ]

[]

[]

[ "mysql", "sequelize.js" ]

[ "try this:\nclass _SettingpageState extends State<Settingpage> {\n List<String> imagelist = [\n 'lib/images/image1.png',\n 'lib/images/image2.png',\n 'lib/images/image3.png',\n 'lib/images/image4.png',\n 'lib/images/image5.png',\n ];\n\n late int imageIndex;\n late String imagePath;\n\n void initRandomImage() {\n imageIndex = 0;\n imagelist.shuffle();\n imagePath = imagelist[0];\n }\n\n @override\n void initState() {\n initRandomImage();\n super.initState();\n }\n\n void showPopUpButton(BuildContext context) {\n showDialog(\n context: context,\n builder: (context) => AlertDialog(\n title: Text('shuffle list'),\n content: TextButton(\n child: Text('shuffle list'),\n onPressed: () {\n initRandomImage();\n Navigator.pop(context);\n setState(() {});\n },\n ),\n ),\n );\n }\n\n @override\n Widget build(BuildContext context) {\n return Scaffold(\n backgroundColor: Colors.black,\n body: Center(\n child: Container(\n height: 600,\n width: 600,\n color: Colors.black,\n child: GestureDetector(\n child: Center(\n child: Center(child: Image.asset(imagePath)),\n ),\n onTap: () {\n if (imageIndex == imagelist.length - 1) {\n showPopUpButton(context);\n } else {\n imageIndex++;\n setState(() {\n imagePath = imagelist[imageIndex];\n });\n }\n },\n ),\n ),\n ),\n );\n }\n}\n\n" ]

[ 0 ]

[]

[]

[ "dart", "flutter" ]

[ "\nIf I counted correctly, you want to print all the variations of 16 hex digits, so you could use a std::uint64_t.\nI've commented out the line that would loop until the second to last number, and printed the first 16 instead.\nYou'd have to print the last number separately. Otherwise you'd be looping forever since all std::uint64_t are less than or equals static_cast<std::uint64_t>(-1).\n\nThe fmt library lets you print something with a given format:\n\n013802bf is just a prefix text.\n{} refers to the second argument passed to fmt::print, in this case, i.\n:016x is the format specification for i: x for hexadecimal, 16 width, and 0 padding.\n\\n is a newline suffix.\n\n\n\n[Demo]\n#include <cstdint> // uint64_t\n#include <fmt/core.h>\n#include <string>\n\nint main() {\n //for (std::uint64_t i{0}; i < static_cast<std::uint64_t>(-1); ++i) {\n for (std::uint64_t i{0}; i < 16; ++i) {\n fmt::print(\"013802bf{:016x}\\n\", i);\n }\n fmt::print(\"...\\n\");\n fmt::print(\"013802bf{:016x}\\n\", static_cast<std::uint64_t>(-1));\n}\n\n// Outputs:\n//\n// 013802bf0000000000000000\n// 013802bf0000000000000001\n// 013802bf0000000000000002\n// 013802bf0000000000000003\n// 013802bf0000000000000004\n// 013802bf0000000000000005\n// 013802bf0000000000000006\n// 013802bf0000000000000007\n// 013802bf0000000000000008\n// 013802bf0000000000000009\n// 013802bf000000000000000a\n// 013802bf000000000000000b\n// 013802bf000000000000000c\n// 013802bf000000000000000d\n// 013802bf000000000000000e\n// 013802bf000000000000000f\n// ...\n// 013802bfffffffffffffffff\n\n" ]

[ 1 ]

[]

[]

[ "c++", "c++11", "hex", "string" ]

[ "Try below commands to clear cache.\naz account clear\naz login\nor\naz login --tenant [tenant id]\n", "The problem was related with Az cloud list. The active azure cloud was \"AzureUSGovernment\" instead of \"AzureCloud\". Once enabled \"AzureCloud\" issue got fixed.\naz cloud set --name AzureCloud\n\n" ]

[ 0, 0 ]

[]

[]

[ "azure" ]

[ "total_acc_avg is a pandas Series object that contains the average of the mort_acc column, grouped by the total_acc column. In this case, the 6th index of the total_acc_avg Series contains the average value of the mort_acc column for the group with total_acc value of 6.\n" ]

[ 1 ]

[]

[]

[ "list", "mean", "pandas", "python" ]

[ "$\"new TaskSolution().Calculate({input})\" evaluates to \"new TaskSolution().Calculate(System.Int32[])\", which is not valid code. input would be treated as string, not passed as the actual array.\n" ]

[ 0 ]

[]

[]

[ ".net", "c#", "csharpscript", "reflection", "roslyn" ]

[ "You've configured the weight on the columns, but you haven't given any weight to any rows. Because of that, and because the frames by default are only 1 pixel tall, the columns will be virtually invisible.\nTo fix this you can give non-zero weight to one or more rows. For example, self.rowconfigure(0, weight=1)\nYou also haven't configured the contents in each column to fill the space allocated. You should add sticky=\"nsew\" to get each of the inner frames to expand to fill. For example, cfg.grid(row=0, column=0, sticky=\"nsew\")\n\n" ]

[ 2 ]

[]

[]

[ "python", "tkinter", "user_interface" ]

[ "You need to install urllib.\nThis is required by matplotlib\n", "Install Python 3.10 and update pip and then try to install Matplotlib and also install urllib using pip install urllib\n" ]

[ 0, 0 ]

[ "Look Install urllib from : https://pypi.python.org/pypi/urllib2_file/0.2.1\nOr if you was instaled pip you can use sudo pip install urllib\n" ]

[ -1 ]

[ "matplotlib", "python", "python_3.x" ]

[ "You could use the botocore.client.S3 class directly as a type hint, even though it doesn't exist at runtime. This works because type hints are only checked at compile time and are not used at runtime:\nfrom botocore.client import S3\n\nclient: S3 = boto3.client('s3')\n\nAlternatively, you could create a custom type hint for your S3 client by creating a class that extends BaseClient and use that as the type hint for your client variable:\nfrom botocore.client import BaseClient\n\nclass S3Client(BaseClient):\n pass\n\nclient: S3Client = boto3.client('s3')\n\nUsing the first option, you can ensure that your client variable has the correct type and get the benefits of type checking, without having to create a custom class that extends BaseClient.\n", "Have a look at mypy-boto3:\nimport boto3\nfrom mypy_boto3_s3 import S3Client\nfrom typing_extensions import reveal_type\n\n\ndef foo(client: S3Client):\n ...\n\n\ns3_client = boto3.client(\"s3\")\n\nreveal_type(s3_client) # revealed type is S3Client\n\nfoo(s3_client) # OK!\n\n" ]

[ 0, 0 ]

[]

[]

[ "boto3", "python_3.x", "python_typing" ]

[ "Currently, there is not a way to coordinate 2 devices using XCTest.\nWith some effort, you could set up your own server that coordinates the actions between these 2 devices by pinging the server before each XCTest action to check the status of your other device.\n" ]

[ 0 ]

[]

[]

[ "xcode", "xctest", "xcuitest" ]

[ "I ended up creating the menu programmatically and it worked:\nlet menu = NSMenu()\n\nlet pauseButton = NSMenuItem(title: \"Pause\", action: #selector(pausePressed), keyEquivalent: \"\")\nmenu.addItem(pauseButton)\n\n" ]

[ 0 ]

[]

[]

[ "interface_builder", "macos", "menuitem", "swift", "xcode" ]

[ "I think this should work. To change the screen orientation to lanscape :\nservice call window 18 i32 1 \nand to change it to portrait : \nservice call window 18 i32 0.\n", "I've found the solution:\nadb shell content insert --uri content://settings/system --bind name:s:user_rotation --bind value:i:1\n\n\n1 at the end means that the device rotation will be set to \"landscape\".\n0 - \"portrait\".\n2 - \"reversed portrait\".\n3 - \"other landscape\".\n\nSources:\n\nhttps://gist.github.com/whunter/832c844db80dda873a81,\nhttps://www.declarecode.com/code-solutions/shell/adb-shell-command-to-rotate-screen.\n\n" ]

[ 0, 0 ]

[]

[]

[ "android" ]

[ "Short answer: I think you want to create a separate MultibodyPlant to your KinematicTrajectoryOptimization that doesn't have the objects in it.\nMore generally, it's very common to have multiple plants flowing through your robot + control stack, e.g. one for the \"robot model\" and another for the \"robot + objects in the world\" model. (It's reasonable that the physics engine's model of the world would be different than the model in the head of the robot). Currently in Drake, it's more recommended to just load two independent plants, rather than try to add/remove objects from an existing plant.\n" ]

[ 1 ]

[]

[]

[ "drake" ]

[ "Try this code:\n#include<WiFi.h>\n\nconst char *ssid = \"YourSSID\"; \nconst char *password = \"YourPassword\";\n \nvoid initWiFi() {\n WiFi.mode(WIFI_STA);\n WiFi.begin(ssid, password);\n Serial.print(\"Connecting to WiFi ..\");\n while (WiFi.status() != WL_CONNECTED) {\n Serial.print('.');\n delay(1000);\n }\n Serial.println(WiFi.localIP());\n }\n \n void setup() {\n Serial.begin(115200);\n initWiFi();\n Serial.print(\"RRSI: \");\n Serial.println(WiFi.RSSI());\n }\n \n void loop() {\n // put your main code here, to run repeatedly:\n }\n\n", "You can also use your code in this simplified form. As mode needs to be called again just before Wifi.begin().\nvoid setup() {\n Serial.begin(115200);\n //initWiFi();\n WiFi.mode(WIFI_STA);\n WiFi.disconnect();\n delay(100);\nWiFi.mode(WIFI_STA);\nWiFi.begin(ssid, password);\nSerial.print(\"Connecting to WiFi ..\");\n while (WiFi.status() != WL_CONNECTED) {\n Serial.print('.');\n delay(1000);\n }\n\n /////////////////////////////\n Serial.print(\"RRSI: \");\n Serial.println(WiFi.RSSI());\n}\n\nvoid loop() {\n // put your main code here, to run repeatedly:\n}\n\n" ]

[ 0, 0 ]

[]

[]

[ "arduino", "arduino_ide", "esp32", "esp8266wifi", "wifi" ]

[ "angular-cli generates\n# See http://help.github.com/ignore-files/ for more about ignoring files.\n\n# compiled output\n/dist\n/tmp\n/out-tsc\n\n# dependencies\n/node_modules\n\n# IDEs and editors\n/.idea\n.project\n.classpath\n.c9/\n*.launch\n.settings/\n*.sublime-workspace\n\n# IDE - VSCode\n.vscode/*\n!.vscode/settings.json\n!.vscode/tasks.json\n!.vscode/launch.json\n!.vscode/extensions.json\n\n# misc\n/.sass-cache\n/connect.lock\n/coverage\n/libpeerconnection.log\nnpm-debug.log\ntestem.log\n/typings\n\n# e2e\n/e2e/*.js\n/e2e/*.map\n\n# System Files\n.DS_Store\nThumbs.db\n\n", "Updated auto-generated .gitignore for Angular 15.0.0 by \"@angular/cli\": \"~15.0.2\" includes /.angular/cache and other new folders that should be ignored in Angular:\n# See http://help.github.com/ignore-files/ for more about ignoring files.\n\n# Compiled output\n/dist\n/tmp\n/out-tsc\n/bazel-out\n\n# Node\n/node_modules\nnpm-debug.log\nyarn-error.log\n\n# IDEs and editors\n.idea/\n.project\n.classpath\n.c9/\n*.launch\n.settings/\n*.sublime-workspace\n\n# Visual Studio Code\n.vscode/*\n!.vscode/settings.json\n!.vscode/tasks.json\n!.vscode/launch.json\n!.vscode/extensions.json\n.history/*\n\n# Miscellaneous\n/.angular/cache\n.sass-cache/\n/connect.lock\n/coverage\n/libpeerconnection.log\ntestem.log\n/typings\n\n# System files\n.DS_Store\nThumbs.db\n\n" ]

[ 66, 0 ]

[]

[]

[ "angular", "git", "gitignore", "javascript" ]

[ "You can use pandas.DataFrame.merge with pandas.Series.fillna :\ndf_order = pd.read_excel(\"SuperStoreUS.xlsx\", sheet_name=\"Orders\")\ndf_return = pd.read_excel(\"SuperStoreUS.xlsx\", sheet_name=\"Returns\")\n\nUse either :\n# --- To create a new dataframe\nout = df_order.merge(df_return, on=\"Order ID\", how=\"left\")\nout[\"Status\"] = out[\"Status\"].fillna(\"Not Returned\")\n\nOr:\n# --- To update df_order\ndf_order = df_order.merge(df_return, on=\"Order ID\", how=\"left\")\ndf_order[\"Status\"] = df_order[\"Status\"].fillna(\"Not Returned\")\n\n", "Another way is to create a new column in df_order, with values conditioned on the row's Order ID:\ndf_orders['Status'] = df_orders['Order ID'].map(lambda x: 'Returned' if x in df_returns['Order ID'].tolist() else 'Not returned')\n\n" ]

[ 1, 1 ]

[]

[]

[ "matching", "multiple_columns", "pandas", "python" ]

[ "Set size for the image:\n<TouchableOpacity>\n <Image\n style={{height: 50, width: 50}}\n source={{\n uri: 'https://reactnative.dev/img/tiny_logo.png',\n }}\n />\n <Text>Text</Text>\n</TouchableOpacity>\n\n" ]

[ 1 ]

[]

[]

[ "android", "react_native" ]

[ "You can use the migration guide to convert your script to v3 and then use the converter tool to convert it to v4 and above.\n//@version=4\nstrategy(\"Bollinger + RSI, Double Strategy (by ChartArt) v1.1\", shorttitle=\"CA_-_RSI_Bol_Strat_1.1\", overlay=true)\n\n\n///////////// RSI\nRSIlength = input(6, title=\"RSI Period Length\")\nRSIoverSold = 50\nRSIoverBought = 50\nprice = close\nvrsi = rsi(price, RSIlength)\n\n\n///////////// Bollinger Bands\nBBlength = input(200, minval=1, title=\"Bollinger Period Length\")\nBBmult = 2 // input(2.0, minval=0.001, maxval=50,title=\"Bollinger Bands Standard Deviation\")\nBBbasis = sma(price, BBlength)\nBBdev = BBmult * stdev(price, BBlength)\nBBupper = BBbasis + BBdev\nBBlower = BBbasis - BBdev\nsource = close\nbuyEntry = crossover(source, BBlower)\nsellEntry = crossunder(source, BBupper)\nplot(BBbasis, color=color.aqua, title=\"Bollinger Bands SMA Basis Line\")\np1 = plot(BBupper, color=color.silver, title=\"Bollinger Bands Upper Line\")\np2 = plot(BBlower, color=color.silver, title=\"Bollinger Bands Lower Line\")\nfill(p1, p2)\n\n\n///////////// Colors\nswitch1 = input(true, title=\"Enable Bar Color?\")\nswitch2 = input(true, title=\"Enable Background Color?\")\nTrendColor = RSIoverBought and price[1] > BBupper and price < BBupper and \n BBbasis < BBbasis[1] ? color.red : \n RSIoverSold and price[1] < BBlower and price > BBlower and BBbasis > BBbasis[1] ? \n color.green : na\nbarcolor(switch1 ? TrendColor : na)\nbgcolor(switch2 ? TrendColor : na, transp=50)\n\n\n///////////// RSI + Bollinger Bands Strategy\nif not na(vrsi)\n\n if crossover(vrsi, RSIoverSold) and crossover(source, BBlower)\n strategy.entry(\"RSI_BB_L\", strategy.long, stop=BBlower, oca_type=strategy.oca.cancel, comment=\"RSI_BB_L\")\n else\n strategy.cancel(id=\"RSI_BB_L\")\n\n if crossunder(vrsi, RSIoverBought) and crossunder(source, BBupper)\n strategy.entry(\"RSI_BB_S\", strategy.short, stop=BBupper, oca_type=strategy.oca.cancel, comment=\"RSI_BB_S\")\n else\n strategy.cancel(id=\"RSI_BB_S\")\n\n//plot(strategy.equity, title=\"equity\", color=red, linewidth=2, style=areabr)\n\n" ]

[ 0 ]

[]

[]

[ "pine_script" ]

[ "Here is what I have done until someone posts a better solution:\nIn the file Global.asax.cs, I added the Application_Error method to redirect when a controller is not found:\nprotected void Application_Error()\n{\n var err = Server.GetLastError();\n if (err.GetType() == typeof(InvalidOperationException))\n {\n if (err.Message.IndexOf(\"The view 'Index' or its master was not found\") == 0)\n {\n if (-1 < err.StackTrace.IndexOf(\"System.Web.Mvc.ViewResult.FindView(ControllerContext context)\"))\n {\n // this controller does not have a view\n var request = HttpContext.Current.Request;\n var homeLink = $\"{request.Url.Scheme}://{request.Url.Authority}{request.ApplicationPath.TrimEnd('/')}/\";\n Response.Redirect(homeLink);\n }\n }\n }\n}\n\nIt works, but it just doesn't seem like the way ASP.NET MVC should handle the case of links going to controllers that do not exist.\n" ]

[ 0 ]

[]

[]

[ "asp.net_mvc", "c#" ]

[ "You can also put your file into your playground's resources. To do this: show Project Navigator with CMD + 1. Drag and drop your file into the resources folder. Then read the file:\nOn Xcode 6.4 and Swift 1.2:\nvar error: NSError?\nlet fileURL = NSBundle.mainBundle().URLForResource(\"Input\", withExtension: \"txt\")\nlet content = String(contentsOfURL: fileURL!, encoding: NSUTF8StringEncoding, error: &error)\n\nOn Xcode 7 and Swift 2:\nlet fileURL = NSBundle.mainBundle().URLForResource(\"Input\", withExtension: \"txt\")\nlet content = try String(contentsOfURL: fileURL!, encoding: NSUTF8StringEncoding)\n\nOn Xcode 8 and Swift 3:\nlet fileURL = Bundle.main.url(forResource: \"Input\", withExtension: \"txt\")\nlet content = try String(contentsOf: fileURL!, encoding: String.Encoding.utf8)\n\nIf the file has binary data, you can use NSData(contentsOfURL: fileURL!) or Data(contentsOf: fileURL!) (for Swift 3).\n", "While the answer has been supplied for a quick fix, there is a better solution. \nEach time the playground is opened it will be assigned a new container. This means using the normal directory structure you would have to copy the file you want into the new container every time.\nInstead, inside the container there is a symbolic link to a Shared Playground Data directory (/Users/UserName/Documents/Shared Playground Data) which remains when reopening the playground, and can be accessed from multiple playgrounds. \nYou can use XCPlayground to access this shared folder.\nimport XCPlayground\n\nlet path = XCPlaygroundSharedDataDirectoryURL.appendingPathComponent(\"foo.txt\")\n\nThe official documentation can be found here: XCPlayground Module Reference\nCool post on how to organize this directory per-playground: Swift, Playgrounds, and XCPlayground \n\nUPDATE: For swift 4.2 use playgroundSharedDataDirectory. Don't need to import anything.\nLooks like:\nlet path = playgroundSharedDataDirectory.appendingPathComponent(\"file\")\n\n", "1. Access a file that is located in the Resources folder of your Playground\nWith Swift 3, Bundle has a method called url(forResource:withExtension:). url(forResource:withExtension:) has the following declaration:\nfunc url(forResource name: String?, withExtension ext: String?) -> URL?\n\n\nReturns the file URL for the resource identified by the specified name and file extension.\n\nYou can use url(forResource:withExtension:) in order to read the content of a json file located in the Resources folder of an iOS or Mac Playground:\nimport Foundation\n\ndo {\n guard let fileUrl = Bundle.main.url(forResource: \"Data\", withExtension: \"json\") else { fatalError() }\n let data = try Data(contentsOf: fileUrl)\n let json = try JSONSerialization.jsonObject(with: data, options: [])\n print(json)\n} catch {\n print(error)\n} \n\nYou can use url(forResource:withExtension:) in order to read the content of a text file located in the Resources folder of an iOS or Mac Playground:\nimport Foundation\n\ndo {\n guard let fileUrl = Bundle.main.url(forResource: \"Text\", withExtension: \"txt\") else { fatalError() }\n let text = try String(contentsOf: fileUrl, encoding: String.Encoding.utf8)\n print(text)\n} catch {\n print(error)\n}\n\nAs an alternative to let image = UIImage(named: \"image\"), you can use url(forResource:withExtension:) in order to access an image located in the Resources folder of an iOS Playground:\nimport UIKit\n\ndo {\n guard let fileUrl = Bundle.main.url(forResource: \"Image\", withExtension: \"png\") else { fatalError() }\n let data = try Data(contentsOf: fileUrl)\n let image = UIImage(data: data)\n} catch {\n print(error)\n}\n\n\n2. Access a file that is located in the ~/Documents/Shared Playground Data folder of your computer\nWith Swift 3, PlaygroundSupport module provides a global constant called playgroundSharedDataDirectory. playgroundSharedDataDirectory has the following declaration:\nlet playgroundSharedDataDirectory: URL\n\n\nThe path to the directory containing data shared between all playgrounds.\n\nYou can use playgroundSharedDataDirectory in order to read the content of a json file located in the ~/Documents/Shared Playground Data folder of your computer from an iOS or Mac Playground:\nimport Foundation\nimport PlaygroundSupport\n\ndo {\n let fileUrl = PlaygroundSupport.playgroundSharedDataDirectory.appendingPathComponent(\"Data.json\") \n let data = try Data(contentsOf: fileUrl)\n let json = try JSONSerialization.jsonObject(with: data, options: [])\n print(json)\n} catch {\n print(error)\n}\n\nYou can use playgroundSharedDataDirectory in order to read the content of a text file located in the ~/Documents/Shared Playground Data folder of your computer from an iOS or Mac Playground:\nimport Foundation\nimport PlaygroundSupport\n\ndo {\n let fileUrl = PlaygroundSupport.playgroundSharedDataDirectory.appendingPathComponent(\"Text.txt\")\n let text = try String(contentsOf: fileUrl, encoding: String.Encoding.utf8)\n print(text)\n} catch {\n print(error)\n}\n\nYou can use playgroundSharedDataDirectory in order to access an image located in the ~/Documents/Shared Playground Data folder of your computer from an iOS Playground:\nimport UIKit\nimport PlaygroundSupport\n\ndo {\n let fileUrl = PlaygroundSupport.playgroundSharedDataDirectory.appendingPathComponent(\"Image.png\")\n let data = try Data(contentsOf: fileUrl)\n let image = UIImage(data: data)\n} catch {\n print(error)\n}\n\n", "Swift 3 (Xcode 8)\nThe code below works in both iOS and macOS playgrounds. The text file (\"MyText.txt\" in this example) must be in the Resources directory of the playground. (Note: You may need to open the navigator window to see the directory structure of your playground.)\nimport Foundation\n\nif let fileURL = Bundle.main.url(forResource:\"MyText\", withExtension: \"txt\")\n{\n do {\n let contents = try String(contentsOf: fileURL, encoding: String.Encoding.utf8)\n print(contents)\n } catch {\n print(\"Error: \\(error.localizedDescription)\")\n }\n} else {\n print(\"No such file URL.\")\n}\n\n", "This works for me. The only thing I changed was to be explicit about the file name (which is implied in your example) - perhaps you have a typo in the off-screen definition of the \"file\" variable?\nlet dirs = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true) as? [String]\n\nlet file = \"trial.txt\" // My change to your code - yours is presumably set off-screen\nif let directories = dirs {\n let dir = directories[0]; //documents directory\n let path = dir.stringByAppendingPathComponent(file);\n\n //read\n let content = NSString(contentsOfFile: path, usedEncoding: nil, error: nil)\n // works...\n}\n\nUpdate Swift 4.2\nAs @raistlin points out, this would now be\nlet dirs = NSSearchPathForDirectoriesInDomains(\n FileManager.SearchPathDirectory.documentDirectory,\n FileManager.SearchPathDomainMask.userDomainMask,\n true)\n\nor, more tersely:\nlet dirs = NSSearchPathForDirectoriesInDomains(.documentDirectory,\n .userDomainMask, true)\n\n", "\nSelect the .playground file.\nOpen Utility inspector, In the playground press opt-cmd-1 to open the File Inspector. You should see the playground on the right. If you don't have it selected, press cmd-1 to open the Project Navigator and click on the playground file.\nUnder 'Resource Path' in Playground Settings choose 'Relative To Playground' and platform as OSX.\n\n", "On Mavericks with Xcode 6.0.1 you can read using iOS platform too.\nimport UIKit\nlet dirs : [String]? = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true) as? [String]\nlet myDir = \"/Shared Playground Data\"\n\nlet file = \"README.md\" // My change to your code - yours is presumably set off-screen\nif (dirs != nil) {\n let directories:[String] = dirs!;\n let dir = directories[0] + myDir; // iOS playground documents directory\n let path = dir.stringByAppendingPathComponent(file);\n\n //read\n let content = String.stringWithContentsOfFile(path, encoding: NSUTF8StringEncoding, error: nil)\n // works...\n println(content!)\n}\n\nRemember, you need to create a directory called \"Shared Playground Data\" in your Documents directory. Im my case I used this command: mkdir \"/Users/joao_parana/Documents/Shared Playground Data\" and put there my file README.md\n", "String.stringWithContentsOfFile is DEPRECATED and doesn't work anymore with Xcode 6.1.1\nCreate your documentDirectoryUrl\nlet documentDirectoryUrl = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as NSURL\n\nTo make sure the file is located there you can use the finder command Go To Folder e copy paste the printed documentDirectoryUrl.path there\nprintln(documentDirectoryUrl.path!)\n// should look like this: /Users/userName/Library/Containers/com.apple.dt.playground.stub.OSX.PLAYGROUNDFILENAME-5AF5B25D-D0D1-4B51-A297-00015EE97F13/Data/Documents\n\nJust append the file name to the folder url as a path component\nlet fileNameUrl = documentDirectoryUrl.URLByAppendingPathComponent(\"ReadMe.txt\")\nvar fileOpenError:NSError?\n\nCheck if the file exists before attempting to open it\nif NSFileManager.defaultManager().fileExistsAtPath(fileNameUrl.path!) {\n\n if let fileContent = String(contentsOfURL: fileNameUrl, encoding: NSUTF8StringEncoding, error: &fileOpenError) {\n println(fileContent) // prints ReadMe.txt contents if successful\n } else {\n if let fileOpenError = fileOpenError {\n println(fileOpenError) // Error Domain=NSCocoaErrorDomain Code=XXX \"The file “ReadMe.txt” couldn’t be opened because....\"\n }\n }\n} else {\n println(\"file not found\")\n}\n\n", "I was unable to read a file with ease in playground and ended up just creating a command line app in Xcode. This seemed to work for me very well. \n", "The other answers, relying on \"playgroundSharedDataDirectory\" never works for me, especially if using an iOS playground.\n\n\nlet documentsDirectoryShareURL = PlaygroundSupport.playgroundSharedDataDirectory.absoluteURL\nlet fileManager = FileManager()\ntry? fileManager.copyItem(at: URL(fileURLWithPath: \"/Users/rufus/Documents/Shared Playground Data/\"), to: documentsDirectoryShareURL)\n\n\r\n\nI just do the above now. I can populate my documents/shared folder, and it is just manually automatically copied to the playgrounds documents directory.\nMy code will not overwrite files that exist there. You could enhance this if you need it to look at file timestamps and then copy if necessary etc.\n", "Swift 5.7.1 - Xcode 14.1\nfunc readFile() -> [String] {\n \n if let fileURL = Bundle.main.url(forResource: \"File\", withExtension: \"txt\") {\n do {\n let content = try String(contentsOf: fileURL)\n var x = content.components(separatedBy: \"\\n\")\n x.removeAll { data in\n data.isEmpty\n }\n return x\n } catch {\n print(error)\n }\n }\n \n return [String]()\n \n}\n//Usage:\nlet input = readFile()\n\n" ]

[ 81, 38, 28, 13, 8, 3, 1, 1, 0, 0, 0 ]

[]

[]

[ "swift" ]

[ "I am one of the authors of dReal.\nAs suggested in the comment, I recommend to read dReal tool paper and “Delta-Complete Decision Procedures for Satisfiability over the Reals” paper. You can find them in https://scungao.github.io .\nSMT problems over Reals are undecidable when they include non-linear math functions (e.g. trigonometric functions). This means that we cannot have a generic SMT solver for this theory. delta-satisfiability is a way to tackle this problem by introducing over-approximation. Consequently, a delta-satisfiability solver may return two types of answers; delta-SAT and UNSAT. The interpretation of UNSAT is standard, the input formula is unsatisfiable. The interpretation of delta-sat is that the over-approximated problem is satisfiable. The degree of over-approximation is determined by the user-provided input parameter (—precision). To be precise, when a solver returns a box, any point sampled in this box satisfies the over-approximated formula.\n" ]

[ 2 ]

[]

[]

[ "dreal", "satisfiability", "smt", "z3", "z3py" ]

[ "Interesting question. My initial thought at constructive critique would be that the tokens accepted by a particular class via the attribute is something decided at compile time and is unable to change. But, the checking for permissions is happening on the construction of each object.\nYou can prevent this with a static constructor that sets the tokenTypes variable. Static constructors always run before instance constructors. This is also a good place to ensure that tokenTypes is never null (in the absence of your custom attribute).\nLikewise, the looping through tokenTypes can probably be a function that takes in an IToken and the tokenTypes, and more importantly, could probably live in the BaseService.cs. Writing that logic once will make it easier to maintain when some future requirement necessitates its change. :)\nSee also: https://learn.microsoft.com/en-us/dotnet/csharp/programming-guide/classes-and-structs/static-constructors\nHope this helps.\n" ]

[ 1 ]

[]

[]

[ "attributes", "c#", "class_library", "design_patterns", "oop" ]

[ "You can try this:\n.mat-slide-toggle-bar {margin-left: 80px !important;}\n\n!important will take precedence over most other rules.\nThe first answer to the linked question gives more details about it:\nWhat is the order of precedence for CSS?\n", "I solved it by this code in the scss of my parent component :\n\n\n.parent-element .mat-slide-toggle-bar {\n margin-left: 20px !important;\n}\n\n\n\n" ]

[ 0, 0 ]

[]

[]

[ "angular", "html", "sass" ]

[ "You can use the within method in GeoPandas to select the polygons that contain at least one point in your points layer:\nimport geopandas as gpd\nimport pandas as pd\n\n# Read the polygon layer from a shapefile.\npolygon_layer = gpd.read_file(r'file.shp')\n\n# Read the points layer from an Excel file.\nexcel = pd.read_excel('file2.xlsx')\npoints_layer = gpd.GeoDataFrame(excel, geometry=gpd.points_from_xy(excel.X, excel.Y))\n\n# Select the polygons that contain at least one point.\nselected_polygons = polygon_layer[polygon_layer.within(points_layer.unary_union)]\n\n# Print the selected polygons.\nprint(selected_polygons)\n\n" ]

[ 0 ]

[]

[]

[ "geopandas", "gis" ]

[ "Here is a script where you can read all files in a directory and write the name of the file and the content into a another file like you did.\nimport os\n\nValuesTextFile = open(\"values.txt\",\"a\")\nPath = './files/'\nfor Filename in os.listdir(Path):\n print (Filename)\n ValuesTextFile.writelines(Filename)\n File = open(Path + Filename, \"r\")\n Content = File.readlines()\n ValuesTextFile.writelines(Content[33:36])\n File.close()\nValuesTextFile.close()\n\n" ]

[ 0 ]

[]

[]

[ "new_operator", "python" ]

[ "Try adding padding-top to the success message div.\n<button className=\"btn btn-primary\">Create a hat</button>\n </div>\n </form>\n <div className={successClass} id=\"success-message\"\nstyle={{padding-top :\"2rem\"}}\n>\n You have created a new hat!\n </div>\n\n`\n\n" ]

[ 0 ]

[]

[]

[ "jsx", "reactjs" ]

[ "This happens when version of CDK dependencies are at different versions.Make sure CDK dependencies have same version.\n\nDelete node_modules folder\nDelete package-lock.json\nEnsure all dependencies in package.json are using same version.\nRemove carrot ^ symbol before dependencies\nnpm install\n\n", "If anyone comes across this issue currently, like I did which is what led me here, the thing I did to resolve this was use the cdk lib and import the things I needed from that.\nimport {Stack, StackProps, App, aws_s3 as s3, aws_iam as iam } from 'aws-cdk-lib';\nimport { BucketEncryption } from 'aws-cdk-lib/aws-s3';\n\n", "update your CDK library. This is normally caused when your CDK library has different versions. npm update -g aws-cdk\n", "The issue was that the @aws-cdk/lambda dependency was not the same version as the @aws-cdk/sqs and @aws-cdk/sns dependencies.\n", "Just to pile on to Yogeshwar's answer (which was incredibly helpful)...\nWhile making sure the versions being used are consistent was a good first step, understanding where the specific versions were coming from and why more deeply was key for me to fix this issue for me.\nI'm using CDK v2, which only requires you to pull in a single module (aws-cdk-lib), but I was still seeing the issue related to the construct library. Two additional pieces of information that helped were to run npm why constructs to see where the different versions of the packages were being pulled in from. This led me to another module that I had created that was asking for \"constructs\": \"^10.0.0\", but was getting 10.1.x...\nThis pushed me towards getting a greater understanding of semver, and finding out that ^, will pull in anything in the 10.x series of versions, thus bringing in the incompatible package (the \"Remove ^\" step from the other answer).\nThis caused me to update how I'm specifying dependencies, and I was eventually able to fix the issue.\n" ]

[ 6, 6, 3, 0, 0 ]

[]

[]

[ "aws_cdk", "typescript" ]

[ "Try this:\nfunction _base64ToArrayBuffer(base64) {\n var binary_string = window.atob(base64);\n var len = binary_string.length;\n var bytes = new Uint8Array(len);\n for (var i = 0; i < len; i++) {\n bytes[i] = binary_string.charCodeAt(i);\n }\n return bytes.buffer;\n}\n\n", "Using TypedArray.from:\nUint8Array.from(atob(base64_string), c => c.charCodeAt(0))\n\nPerformance to be compared with the for loop version of Goran.it answer.\n", "Goran.it's answer does not work because of unicode problem in javascript - https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding. \nI ended up using the function given on Daniel Guerrero's blog: http://blog.danguer.com/2011/10/24/base64-binary-decoding-in-javascript/\nFunction is listed on github link: https://github.com/danguer/blog-examples/blob/master/js/base64-binary.js\n \nUse these lines \nvar uintArray = Base64Binary.decode(base64_string); \nvar byteArray = Base64Binary.decodeArrayBuffer(base64_string); \n\n", "For Node.js users:\nconst myBuffer = Buffer.from(someBase64String, 'base64');\n\nmyBuffer will be of type Buffer which is a subclass of Uint8Array. Unfortunately, Uint8Array is NOT an ArrayBuffer as the OP was asking for. But when manipulating an ArrayBuffer I almost always wrap it with Uint8Array or something similar, so it should be close to what's being asked for.\n", "Just found base64-arraybuffer, a small npm package with incredibly high usage, 5M downloads last month (2017-08).\nhttps://www.npmjs.com/package/base64-arraybuffer\nFor anyone looking for something of a best standard solution, this may be it.\n", "Async solution, it's better when the data is big:\n// base64 to buffer\nfunction base64ToBufferAsync(base64) {\n var dataUrl = \"data:application/octet-binary;base64,\" + base64;\n\n fetch(dataUrl)\n .then(res => res.arrayBuffer())\n .then(buffer => {\n console.log(\"base64 to buffer: \" + new Uint8Array(buffer));\n })\n}\n\n// buffer to base64\nfunction bufferToBase64Async( buffer ) {\n var blob = new Blob([buffer], {type:'application/octet-binary'}); \n console.log(\"buffer to blob:\" + blob)\n\n var fileReader = new FileReader();\n fileReader.onload = function() {\n var dataUrl = fileReader.result;\n console.log(\"blob to dataUrl: \" + dataUrl);\n\n var base64 = dataUrl.substr(dataUrl.indexOf(',')+1) \n console.log(\"dataUrl to base64: \" + base64);\n };\n fileReader.readAsDataURL(blob);\n}\n\n", "Javascript is a fine development environment so it seems odd than it doesn't provide a solution to this small problem. The solutions offered elsewhere on this page are potentially slow. Here is my solution. It employs the inbuilt functionality that decodes base64 image and sound data urls.\nvar req = new XMLHttpRequest;\nreq.open('GET', \"data:application/octet;base64,\" + base64Data);\nreq.responseType = 'arraybuffer';\nreq.onload = function fileLoaded(e)\n{\n var byteArray = new Uint8Array(e.target.response);\n // var shortArray = new Int16Array(e.target.response);\n // var unsignedShortArray = new Int16Array(e.target.response);\n // etc.\n}\nreq.send();\n\nThe send request fails if the base 64 string is badly formed.\nThe mime type (application/octet) is probably unnecessary.\nTested in chrome. Should work in other browsers.\n", "Pure JS - no string middlestep (no atob)\nI write following function which convert base64 in direct way (without conversion to string at the middlestep). IDEA\n\nget 4 base64 characters chunk\nfind index of each character in base64 alphabet\nconvert index to 6-bit number (binary string)\njoin four 6 bit numbers which gives 24-bit numer (stored as binary string)\nsplit 24-bit string to three 8-bit and covert each to number and store them in output array\ncorner case: if input base64 string ends with one/two = char, remove one/two numbers from output array\n\nBelow solution allows to process large input base64 strings. Similar function for convert bytes to base64 without btoa is HERE\n\n\nfunction base64ToBytesArr(str) {\n const abc = [...\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\"]; // base64 alphabet\n let result = [];\n\n for(let i=0; i<str.length/4; i++) {\n let chunk = [...str.slice(4*i,4*i+4)]\n let bin = chunk.map(x=> abc.indexOf(x).toString(2).padStart(6,0)).join(''); \n let bytes = bin.match(/.{1,8}/g).map(x=> +('0b'+x));\n result.push(...bytes.slice(0,3 - (str[4*i+2]==\"=\") - (str[4*i+3]==\"=\")));\n }\n return result;\n}\n\n\n// --------\n// TEST\n// --------\n\n\nlet test = \"Alice's Adventure in Wonderland.\"; \n\nconsole.log('test string:', test.length, test);\nlet b64_btoa = btoa(test);\nconsole.log('encoded string:', b64_btoa);\n\nlet decodedBytes = base64ToBytesArr(b64_btoa); // decode base64 to array of bytes\nconsole.log('decoded bytes:', JSON.stringify(decodedBytes));\nlet decodedTest = decodedBytes.map(b => String.fromCharCode(b) ).join``;\nconsole.log('Uint8Array', JSON.stringify(new Uint8Array(decodedBytes)));\nconsole.log('decoded string:', decodedTest.length, decodedTest);\n\n\n\nCaution!\nIf you want to decode base64 to STRING (not bytes array) and you know that result contains utf8 characters then atob will fail in general e.g. for character the atob(\"8J+SqQ==\") will give wrong result . In this case you can use above solution and convert result bytes array to string in proper way e.g. :\n\n\nfunction base64ToBytesArr(str) {\n const abc = [...\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\"]; // base64 alphabet\n let result = [];\n\n for(let i=0; i<str.length/4; i++) {\n let chunk = [...str.slice(4*i,4*i+4)]\n let bin = chunk.map(x=> abc.indexOf(x).toString(2).padStart(6,0)).join(''); \n let bytes = bin.match(/.{1,8}/g).map(x=> +('0b'+x));\n result.push(...bytes.slice(0,3 - (str[4*i+2]==\"=\") - (str[4*i+3]==\"=\")));\n }\n return result;\n}\n\n\n// --------\n// TEST\n// --------\n\n\nlet testB64 = \"8J+SqQ==\"; // for string: \"\"; \nconsole.log('input base64 :', testB64);\n\nlet decodedBytes = base64ToBytesArr(testB64); // decode base64 to array of bytes\nconsole.log('decoded bytes :', JSON.stringify(decodedBytes));\n\nlet result = new TextDecoder(\"utf-8\").decode(new Uint8Array(decodedBytes));\nconsole.log('properly decoded string :', result);\n\nlet result_atob = atob(testB64);\nconsole.log('decoded by atob :', result_atob);\n\n\n\nSnippets tested 2022-08-04 on: chrome 103.0.5060.134 (arm64), safari 15.2, firefox 103.0.1 (64 bit), edge 103.0.1264.77 (arm64), and node-js v12.16.1\n", "I would strongly suggest using an npm package implementing correctly the base64 specification.\nThe best one I know is rfc4648\nThe problem is that btoa and atob use binary strings instead of Uint8Array and trying to convert to and from it is cumbersome. Also there is a lot of bad packages in npm for that. I lose a lot of time before finding that one.\nThe creators of that specific package did a simple thing: they took the specification of Base64 (which is here by the way) and implemented it correctly from the beginning to the end. (Including other formats in the specification that are also useful like Base64-url, Base32, etc ...) That doesn't seem a lot but apparently that was too much to ask to the bunch of other libraries.\nSo yeah, I know I'm doing a bit of proselytism but if you want to avoid losing your time too just use rfc4648.\n", "I used the accepted answer to this question to create base64Url string <-> arrayBuffer conversions in the realm of base64Url data transmitted via ASCII-cookie [atob, btoa are base64[with +/]<->js binary string], so I decided to post the code.\nMany of us may want both conversions and client-server communication may use the base64Url version (though a cookie may contain +/ as well as -_ characters if I understand well, only \",;\\ characters and some wicked characters from the 128 ASCII are disallowed). But a url cannot contain / character, hence the wider use of b64 url version which of course not what atob-btoa supports...\nSeeing other comments, I would like to stress that my use case here is base64Url data transmission via url/cookie and trying to use this crypto data with the js crypto api (2017) hence the need for ArrayBuffer representation and b64u <-> arrBuff conversions... if array buffers represent other than base64 (part of ascii) this conversion wont work since atob, btoa is limited to ascii(128). Check out an appropriate converter like below:\nThe buff -> b64u version is from a tweet from Mathias Bynens, thanks for that one (too)! He also wrote a base64 encoder/decoder:\nhttps://github.com/mathiasbynens/base64\nComing from java, it may help when trying to understand the code that java byte[] is practically js Int8Array (signed int) but we use here the unsigned version Uint8Array since js conversions work with them. They are both 256bit, so we call it byte[] in js now...\nThe code is from a module class, that is why static.\n//utility\n\n/**\n * Array buffer to base64Url string\n * - arrBuff->byte[]->biStr->b64->b64u\n * @param arrayBuffer\n * @returns {string}\n * @private\n */\nstatic _arrayBufferToBase64Url(arrayBuffer) {\n console.log('base64Url from array buffer:', arrayBuffer);\n\n let base64Url = window.btoa(String.fromCodePoint(...new Uint8Array(arrayBuffer)));\n base64Url = base64Url.replaceAll('+', '-');\n base64Url = base64Url.replaceAll('/', '_');\n\n console.log('base64Url:', base64Url);\n return base64Url;\n}\n\n/**\n * Base64Url string to array buffer\n * - b64u->b64->biStr->byte[]->arrBuff\n * @param base64Url\n * @returns {ArrayBufferLike}\n * @private\n */\nstatic _base64UrlToArrayBuffer(base64Url) {\n console.log('array buffer from base64Url:', base64Url);\n\n let base64 = base64Url.replaceAll('-', '+');\n base64 = base64.replaceAll('_', '/');\n const binaryString = window.atob(base64);\n const length = binaryString.length;\n const bytes = new Uint8Array(length);\n for (let i = 0; i < length; i++) {\n bytes[i] = binaryString.charCodeAt(i);\n }\n\n console.log('array buffer:', bytes.buffer);\n return bytes.buffer;\n}\n\n", "made a ArrayBuffer from a base64:\nfunction base64ToArrayBuffer(base64) {\n var binary_string = window.atob(base64);\n var len = binary_string.length;\n var bytes = new Uint8Array(len);\n for (var i = 0; i < len; i++) {\n bytes[i] = binary_string.charCodeAt(i);\n }\n return bytes.buffer;\n }\n\nI was trying to use above code and It's working fine.\n", "Solution without atob\nI've seen many people complaining about using atob and btoa in the replies. There are some issues to take into account when using them.\nThere's a solution without using them in the MDN page about Base64. Below you can find the code to convert a base64 string into a Uint8Array copied from the docs.\nNote that the function below returns a Uint8Array. To get the ArrayBuffer version you just need to do uintArray.buffer.\nfunction b64ToUint6(nChr) {\n return nChr > 64 && nChr < 91\n ? nChr - 65\n : nChr > 96 && nChr < 123\n ? nChr - 71\n : nChr > 47 && nChr < 58\n ? nChr + 4\n : nChr === 43\n ? 62\n : nChr === 47\n ? 63\n : 0;\n}\n\nfunction base64DecToArr(sBase64, nBlocksSize) {\n const sB64Enc = sBase64.replace(/[^A-Za-z0-9+/]/g, \"\");\n const nInLen = sB64Enc.length;\n const nOutLen = nBlocksSize\n ? Math.ceil(((nInLen * 3 + 1) >> 2) / nBlocksSize) * nBlocksSize\n : (nInLen * 3 + 1) >> 2;\n const taBytes = new Uint8Array(nOutLen);\n\n let nMod3;\n let nMod4;\n let nUint24 = 0;\n let nOutIdx = 0;\n for (let nInIdx = 0; nInIdx < nInLen; nInIdx++) {\n nMod4 = nInIdx & 3;\n nUint24 |= b64ToUint6(sB64Enc.charCodeAt(nInIdx)) << (6 * (3 - nMod4));\n if (nMod4 === 3 || nInLen - nInIdx === 1) {\n nMod3 = 0;\n while (nMod3 < 3 && nOutIdx < nOutLen) {\n taBytes[nOutIdx] = (nUint24 >>> ((16 >>> nMod3) & 24)) & 255;\n nMod3++;\n nOutIdx++;\n }\n nUint24 = 0;\n }\n }\n\n return taBytes;\n}\n\nIf you're interested in the reverse operation, ArrayBuffer to base64, you can find how to do it in the same link.\n" ]

[ 228, 119, 45, 42, 29, 22, 13, 7, 3, 1, 1, 0 ]

[ "The result of atob is a string that is separated with some comma\n\n,\n\nA simpler way is to convert this string to a json array string and after that parse it to a byteArray\nbelow code can simply be used to convert base64 to an array of number\nlet byteArray = JSON.parse('['+atob(base64)+']'); \nlet buffer = new Uint8Array(byteArray);\n\n" ]

[ -1 ]

[ "arraybuffer", "arrays", "base64", "javascript" ]

[ "Class<?> cls = Class.forName(className);\n\nBut your className should be fully-qualified - i.e. com.mycompany.MyClass\n", "String clsName = \"Ex\"; // use fully qualified name\nClass cls = Class.forName(clsName);\nObject clsInstance = (Object) cls.newInstance();\n\nCheck the Java Tutorial trail on Reflection at http://java.sun.com/docs/books/tutorial/reflect/TOC.html for further details.\n", "You can use the forName method of Class:\nClass cls = Class.forName(clsName);\nObject obj = cls.newInstance();\n\n", "You can get the Class reference of any class during run time through the Java Reflection Concept.\nCheck the Below Code. Explanation is given below\nHere is one example that uses returned Class to create an instance of AClass:\npackage com.xyzws;\nclass AClass {\n public AClass() {\n System.out.println(\"AClass's Constructor\"); \n } \n static { \n System.out.println(\"static block in AClass\"); \n }\n}\npublic class Program { \n public static void main(String[] args) {\n try { \n System.out.println(\"The first time calls forName:\"); \n Class c = Class.forName(\"com.xyzws.AClass\"); \n AClass a = (AClass)c.newInstance(); \n System.out.println(\"The second time calls forName:\"); \n Class c1 = Class.forName(\"com.xyzws.AClass\"); \n } catch (ClassNotFoundException e) { \n // ...\n } catch (InstantiationException e) { \n // ...\n } catch (IllegalAccessException e) { \n // ...\n } \n }\n}\n\nThe printed output is\n The first time calls forName:\n static block in AClass\n AClass's Constructor\n The second time calls forName:\n\nThe class has already been loaded so there is no second \"static block in AClass\" \nThe Explanation is below\nClass.ForName is called to get a Class Object\nBy Using the Class Object we are creating the new instance of the Class.\nAny doubts about this let me know \n", "It should be:\nClass.forName(String classname)\n", "Not sure what you are asking, but... Class.forname, maybe?\n", "public static Class<?> getType(String typeName) {\n if(typeName.equals(\"Date\")) {\n return Date.class;\n } else if(typeName.equals(\"Float\")) {\n return Float.class;\n } else if(typeName.equals(\"Double\")) {\n return Double.class;\n } else if(typeName.equals(\"Integer\")) {\n return Integer.class;\n }\n return String.class;\n}\n\n" ]

[ 193, 45, 10, 4, 3, 2, 0 ]

[]

[]

[ "class", "java", "reflection" ]

[]

[]

[ "Wrap the code with try/catch .\n" ]

[ -2 ]

[ "android", "csv", "kotlin" ]

[ "You do not have to run production build with ts-node, it just transpiles your code on a fly. You can simply check it, run ts-node and paste some code, then try to see sources of runtime code. Also compilation level and other configurations matter at your tsconfig file.\n> const a = (a: string) => a + 'hello';\nundefined\n> a.toString()\n\"function (a) { return a + 'hello'; }\"\n\nSo when you run your project it:\n\nTypechecks your every file\nTranspiles your every file\nInterprets such file\nThen only runs your code\n\nAs it is an interpreted process so your time goes to (require -> typecheck -> transpile -> run -> repeat) till all your code is executed. As your codebase is cascade you my run into performance issues on typechecking\n", "Two solutions for dev env only\n\nUse tsc --watch, it will rebuild on file changes and is very fast since it rebuild only the changed files\n\nOR\n\nUse ts-node-dev. It's a mix of ts-node and nodemon or pm2. So it recompiles and restart server on file changes.\n\n" ]

[ 1, 0 ]

[]

[]

[ "typescript" ]

[ "From your comment on the now deleted answer:\n\na web component still don't act like a proper element\n\nWeb Components are proper elements, extended from HTMLElement\nAnd you can not set Custom Event on* declarative Event Handlers on a DIV either\n(unless you use build-step tooling that transpiles your code)\nSo all on* declarative Event handlers can be set on a Web Component:\n\nhttps://html.spec.whatwg.org/multipage/webappapis.html#event-handlers-on-elements,-document-objects,-and-window-objects\n\nIf you want a custom handler, you use addEventListener\n" ]

[ 0 ]

[]

[]

[ "custom_events", "web_component" ]

[ "After running more tests I realized that the problem was iCloud. For some reason working on both computers at the same time made my local computers work very slowly. The problem was hard to find because the iCloud bird process didn't appear to use more resources than it usually would.\nTo solve this I had to kill iCloud on both computers and restart the service. I recently updated both computers to Ventura 13.0.1 so I think the problem might be somewhere along those lines.\n" ]

[ 0 ]

[]

[]

[ "flutter_ios", "ios", "xcode", "xcodebuild" ]

[ "To pass images through intent in Android. You can do this by converting the image to a Base64 string and then pass it in the intent extras. You can then decode the Base64 string in the receiving activity and get the image back.\nKotlin:\n// Convert image to Base64 string\nval imageString = Base64.encodeToString(imageByteArray, Base64.DEFAULT)\n\n// Create intent\nval intent = Intent(context, TargetActivity::class.java)\n\n// Add image string to intent\nintent.putExtra(\"IMAGE\", imageString)\n\n// Start activity\nstartActivity(intent)\n\n\n// In TargetActivity:\n\n// Get image string from intent\nval imageString = intent.getStringExtra(\"IMAGE\")\n\n// Decode image string\nval imageByteArray = Base64.decode(imageString, Base64.DEFAULT)\n\n// Create bitmap from decoded image\nval bitmap = BitmapFactory.decodeByteArray(imageByteArray, 0, imageByteArray.size)\n\nJAVA:\n// Convert image to Base64 string\nString imageString = Base64.encodeToString(imageByteArray, Base64.DEFAULT);\n\n// Create intent\nIntent intent = new Intent(context, TargetActivity.class);\n\n// Add image string to intent\nintent.putExtra(\"IMAGE\", imageString);\n\n// Start activity\nstartActivity(intent);\n\n\n// In TargetActivity:\n\n// Get image string from intent\nString imageString = intent.getStringExtra(\"IMAGE\");\n\n// Decode image string\nbyte[] imageByteArray = Base64.decode(imageString, Base64.DEFAULT);\n\n// Create bitmap from decoded image\nBitmap bitmap = BitmapFactory.decodeByteArray(imageByteArray, 0, imageByteArray.length);\n\n" ]

[ 0 ]

[]

[]

[ "android", "android_intent" ]

[ "Looking at the signature of HashSet::intersection will make this clearer:\npub fn intersection<'a>(\n &'a self,\n other: &'a HashSet<T, S>\n) -> Intersection<'a, T, S>\n\nThe type Intersection<'a, T, S> implements Iterator<Item=&'a T>. So when you collect this iterator, you get a HashSet<&char> as opposed to a HashSet<char>.\nThe solution is simply to use .cloned on the iterator before you use .collect, since char is Clone, like so:\nmatching_chars = matching_chars.intersection(&next_sack_values).cloned().collect()\n\n", "Your attempt at using cloned() was almost right but you have to call it after you create the iterator:\nmatching_chars.intersection(&next_sack_values).cloned().collect::<HashSet<_>>()\n\nor for Copy types you should use the more appropriate .copied() adapter:\nmatching_chars.intersection(&next_sack_values).copied().collect::<HashSet<_>>()\n\n", "\nBy the way, what is that first error trying to tell me?\n\nThe error is telling you that it expects char because (due to) the original value for matching_chars has type HashSet<char>.\n\nI also tried changing matching_chars = matching_chars to matching_chars = matching_chars.cloned() and I get the following error. I understand what the error is saying, but I don't know how to resolve it.\n\nDo you, really?\nstr::chars is an Iterator<Item=char>, so when you collect() to a hashset you get a HashSet<char>.\nThe problem is that intersection borrows the hashset, and since the items the hashset contains may or may not be Clone, it also has to borrow the set items, it can't just copy or clone them (not without restricting its flexibility anyway).\nSo that's where you need to add the cloned call, on the HashSet::intersection in order to adapt it from an Iterator<Item=&char> to an Iterator<Item=char>.\nOr you can just use the & operator, which takes two borrowed hashsets and returns an owned hashset (requiring that the items be Clone).\nAlternatively use Iterator::filter or Iterator::findon one of the sets, checking if the othersHashSet::containsthe item being looked at. Fundamentally that's basically whatintersection` does, and you know there's just one item at the end.\n" ]

[ 0, 0, 0 ]

[]

[]

[ "rust" ]

[ "You can use the MIN statement in your query to check that the minimal score is more or equal to 5.\nThis assumes that you will have every grade recorded in the database.\nAlso, in your query you have Recap_ prefix for your table names. I removed it to align with the table names in the question.\nSELECT\n new_table.id,\n new_table.name,\n AVG(CASE WHEN grade_type = 'e' THEN new_table.mark END) AS \"Average Exam Grade\",\n AVG(CASE WHEN GRADE_TYPE <> 'e' THEN new_table.mark END) AS \"Average Activity Grade\",\n (2*AVG(CASE WHEN grade_type = 'e' THEN new_table.mark END) + AVG(CASE WHEN GRADE_TYPE <> 'e' THEN new_table.mark END))/3 AS \"Course Final Grade\"\nFROM\n(\n SELECT s.id, c.name, g.grade_type, g.mark\n FROM Students s\n JOIN Course_Signup csn\n ON s.id = csn.student_id\n JOIN Courses c\n ON c.id = csn.course_id\n JOIN Grades g\n ON g.signup_id = csn.id\n) new_table\nGROUP BY new_table.id, new_table.name\nHAVING MIN(new_table.mark) >= 5.00\nORDER BY new_table.id ASC\n\n", "To get the students satisfying the conditions \"grades on all sign-up and mark >=5\", you can use traditional relational division query:\nselect s.id, s.name, cs.year, g.grade_type, g.mark \nfrom students s\n join Course_Signup cs on cs.student_id = s.id\n join Grades g ON cs.id = g.signup_id\nwhere not exists(\n select 1 from Course_Signup cs\n where s.id = cs.student_id\n and not exists(\n select 1 from grades g \n where g.signup_id = cs.id \n and g.mark >= 5\n )\n);\n\n" ]

[ 1, 0 ]

[]

[]

[ "aggregate_functions", "join", "oracle", "sql" ]

[ "a = 'some_description'\ndf.assign(some_description=df[a].str.split(r'\\. ')).explode(a)\n\nresult:\n num_legs num_wings some_description\nfalcon 2 2 falcons have wings\nfalcon 2 2 falcons fly\ndog 4 0 dog have 4 legs\ndog 4 0 they are the best\nspider 8 0 spiders create webs\nspider 8 0 spiders have 8 legs\nfish 0 0 fish swims\nfish 0 0 fish lives in water\n\n" ]

[ 0 ]

[]

[]

[ "dataframe", "pandas", "python", "vectorization" ]

[ "You can use the following steps:\nCreate two environment files: .env for production and .env.dev for development.\nIn your package.json file, update the scripts section to include two new commands: build:dev and build:prod. These commands will be used to build your app using the appropriate environment file.\nHere is an example of what your scripts section might look like:\n\"scripts\": {\n \"build:dev\": \"env-cmd -f .env.dev react-scripts build\",\n \"build:prod\": \"env-cmd -f .env react-scripts build\",\n \"start:dev\": \"env-cmd -f .env.dev react-scripts start\",\n \"start:prod\": \"env-cmd -f .env react-scripts start\",\n \"test\": \"react-scripts test\",\n \"eject\": \"react-scripts eject\"\n},\n\nIn your .csproj file, update the TargetFramework element to include the Publish target:\n<TargetFramework>netcoreapp3.1</TargetFramework>\n<TargetFramework>net5.0</TargetFramework>\n\nIn your project, create a new file named publish.prod.cmd that contains the following commands:\nnpm run build:prod\ndotnet publish\n\nThis file will be used to build your app using the production environment file and publish it to Azure.\nIn your project, create a new file named publish.dev.cmd that contains the following commands:\nnpm run build:dev\ndotnet publish\n\nThis file will be used to build your app using the development environment file and publish it to Azure.\nIn Visual Studio, open the Publish window for your project. In the Build section, select the Custom option and enter the path to the appropriate publish script file (publish.prod.cmd for production and publish.dev.cmd for development).\nSelect the appropriate publish profile and click the Publish button to publish your app to Azure. The app will be built using the environment file specified in the selected publish script, and the resulting build will be published to Azure.\n" ]

[ 0 ]

[]

[]

[ ".env", "asp.net_core", "azure", "reactjs", "visual_studio" ]

[ "you can test this way :\n\n\nconst \n rgxDte = /^\\d{1,2}\\/\\d{1.2}\\/\\d{4}$/\n, msgTxt =\n [ 'date is valid'\n , 'date doesn\\'t respect regex' \n , 'date year is > 3000'\n , 'date has invalid day / month value(s)'\n ];\ndocument.querySelectorAll('button').forEach( btn =>\n {\n const \n inDateTxt = btn.closest('label').querySelector('input')\n , outMsg = btn.closest('label').querySelector('output')\n , dte_DMY = inDateTxt.placeholder === 'dd/mm/yyyy'\n ;\n inDateTxt.oninput =_=>\n {\n outMsg.textContent = ''\n } \n btn.onclick =_=>\n {\n let msgIndx = rgxDte.test(inDateTxt.value) ? 0 : 1\n ;\n if (!msgIndx) // same as if (msgIndx===0)\n {\n let \n [ DM, MD, year ] = inDateTxt.value.split('/').map(Number)\n , day = dte_DMY ? DM : MD\n , month = (dte_DMY ? MD : DM) -1 // month value is an index (first month indx is zero)\n , dateTest = new Date( year, month, day ) // work with adds,ex: if day > month number days it add days value and do month++\n ;\n if (year > 3000)\n msgIndx = 2;\n\n if (!msgIndx && ( dateTest.getDate() !== day || dateTest.getMonth() !== month )) \n msgIndx = 3;\n }\n outMsg.classList.toggle('BAD', !!msgIndx)\n outMsg.textContent = msgTxt[msgIndx] \n }\n })\nbody {\n font-family : Arial, Helvetica, sans-serif;\n font-size : 16px;\n margin : 1rem;\n}\nlabel, input, output {\n display: block;\n }\ninput {\n padding : .2rem .5rem;\n width : 8rem;\n font-size : 1.2rem ;\n}\noutput {\n height : 2em;\n margin : .5rem 0 1rem 0;\n color : green;\n }\noutput.BAD { color : red; }\n<label>\n dd/mm/yyyy : \n <input type=\"text\" id=\"inDMY\" placeholder=\"dd/mm/yyyy\">\n <button>check</button>\n <output></output>\n</label>\n\n<label>\n mm/dd/yyyy : \n <input type=\"text\" id=\"inMDY\" placeholder=\"mm/dd/yyyy\">\n <button>check</button>\n <output></output>\n</label>\n\n\n\n" ]

[ 0 ]

[]

[]

[ "javascript", "jquery", "regex" ]

[ "Please check the custom shortcodes if you were added any shortcode in your theme function.php file and make sure the shortcode output wrapped with ob_start() and ob_clean() this may causes the error.\nhttps://wordpress.stackexchange.com/questions/242769/clean-way-of-using-ob-start-and-ob-end-clean-in-wordpress\n" ]

[ 0 ]

[]

[]

[ "custom_wordpress_pages", "error_handling", "json", "maintenance_mode", "wordpress" ]

[ "Use data.values() as target in for loop to iterate over the JSON objects. Doing a loop over data iterates over the keys which is a string value (e.g. \"A1J780\").\ndata = {\n 'A1J780': {'ter': '0.20%', 'wkn': 'A1J780', 'isin': 'IE00B88DZ566'},\n 'A1J7W9': {'ter': '0.20%', 'isin': 'IE00B8KMSQ34'}\n}\nvalue_list = []\nfor i in data.values():\n value_list.append(i['isin'])\nprint(value_list)\n\nOutput:\n['IE00B88DZ566', 'IE00B8KMSQ34']\n\nIf the isin key is not present in any of the dictionary objects then you would need to use i.get('isin') and check if the value is not None otherwise i['isin'] would raise an exception.\n", "The error message TypeError: string indices must be integers, not 'str' indicates that you are trying to access a dictionary value using a string as the key, but the type of the key should be an integer instead.\nIn your code, the i variable in the for loop is a string, because it represents the keys in the data dictionary. However, you are trying to access the 'isin' value in the dictionary using the i['isin'] syntax, which is not valid for a string key.\nTo fix this issue, you can use the i variable as the key to access the dictionary value, like this:\nwith open('output.json') as f:\n data = json.load(f)\n\nvalue_list = list()\nfor i in data:\n value_list.append(data[i]['isin'])\nprint(value_list)\n\nIn this updated code, the data[i] syntax is used to access the dictionary value associated with the key i, and then the ['isin'] syntax is used to access the 'isin' value in the nested dictionary.\nThis code should produce the expected output of a list of ISINs from the output.json file.\n" ]

[ 0, 0 ]

[]

[]

[ "dictionary", "json", "python" ]

[ "Use option --timeout <sec> to set socket time out.\nAlso, as @Iain Shelvington mentioned, timeout = <sec> in pip configuration will also work.\nTIP: Every time you want to know something (maybe an option) about a command (tool), before googling, check the manual page of the command by using man <command> or use <command> --help or check that command's docs online will be very useful too (Maybe better than Google).\n", "To set the timeout time to 30sec for example. The easiest way is executing: pip config global.timeout 30 or going to the pip configuration file pip.ini located in the directory ~\\AppData\\Roaming\\pip in the case of Windows operating system. If the file does not exist there, create it and write:\n[global]\ntimeout = 30.\n" ]

[ 10, 0 ]

[]

[]

[ "pip", "python", "request_timed_out" ]

[ "To solve this you need a WKUIDelegate for your web view. It is the duty of the delegate to decide if an alert should be displayed, and in what way. You need to implement this for alert, confirm and text input (prompt).\nHere is sample code without any validation of the page url or security features:\n- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler\n{\n UIAlertController *alertController = [UIAlertController alertControllerWithTitle:message\n message:nil\n preferredStyle:UIAlertControllerStyleAlert];\n [alertController addAction:[UIAlertAction actionWithTitle:@\"OK\"\n style:UIAlertActionStyleCancel\n handler:^(UIAlertAction *action) {\n completionHandler();\n }]];\n [self presentViewController:alertController animated:YES completion:^{}];\n}\n\nMore in the Official Documentation\n", "Swift 3 with all 3 optional functions implemented:\nfunc webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo,\n completionHandler: @escaping () -> Void) {\n\n let alertController = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)\n alertController.addAction(UIAlertAction(title: \"OK\", style: .default, handler: { (action) in\n completionHandler()\n }))\n\n present(alertController, animated: true, completion: nil)\n}\n\n\nfunc webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo,\n completionHandler: @escaping (Bool) -> Void) {\n\n let alertController = UIAlertController(title: nil, message: message, preferredStyle: .actionSheet)\n\n alertController.addAction(UIAlertAction(title: \"OK\", style: .default, handler: { (action) in\n completionHandler(true)\n }))\n\n alertController.addAction(UIAlertAction(title: \"Cancel\", style: .default, handler: { (action) in\n completionHandler(false)\n }))\n\n present(alertController, animated: true, completion: nil)\n}\n\n\nfunc webView(_ webView: WKWebView, runJavaScriptTextInputPanelWithPrompt prompt: String, defaultText: String?, initiatedByFrame frame: WKFrameInfo,\n completionHandler: @escaping (String?) -> Void) {\n\n let alertController = UIAlertController(title: nil, message: prompt, preferredStyle: .actionSheet)\n\n alertController.addTextField { (textField) in\n textField.text = defaultText\n }\n\n alertController.addAction(UIAlertAction(title: \"OK\", style: .default, handler: { (action) in\n if let text = alertController.textFields?.first?.text {\n completionHandler(text)\n } else {\n completionHandler(defaultText)\n }\n }))\n\n alertController.addAction(UIAlertAction(title: \"Cancel\", style: .default, handler: { (action) in\n completionHandler(nil)\n }))\n\n present(alertController, animated: true, completion: nil)\n}\n\n", "Just to expand a bit, WKWebView requires you to show alerts, prompts, and confirms yourself. Do this by becoming a WKUIDelegate:\n#import <WebKit/WebKit.h>\n@interface MyController : UIViewController<WKUIDelegate>\n\nThen assign the delegate:\nweb.UIDelegate = self;\n\nThen you need to actually implement alert, prompt, and confirm. I create WKWebViewPanelManager.h/m as an easy implementation, so here's what I do:\n- (void)webView:(WKWebView *)webView runJavaScriptAlertPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(void))completionHandler {\n [WKWebViewPanelManager presentAlertOnController:self.view.window.rootViewController title:@\"Alert\" message:message handler:completionHandler];\n}\n\n- (void)webView:(WKWebView *)webView runJavaScriptConfirmPanelWithMessage:(NSString *)message initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(BOOL result))completionHandler {\n [WKWebViewPanelManager presentConfirmOnController:self.view.window.rootViewController title:@\"Confirm\" message:message handler:completionHandler];\n}\n\n- (void)webView:(WKWebView *)webView runJavaScriptTextInputPanelWithPrompt:(NSString *)prompt defaultText:(nullable NSString *)defaultText initiatedByFrame:(WKFrameInfo *)frame completionHandler:(void (^)(NSString * __nullable result))completionHandler {\n [WKWebViewPanelManager presentPromptOnController:self.view.window.rootViewController title:@\"Prompt\" message:prompt defaultText:defaultText handler:completionHandler];\n}\n\nOf course, it's up to you to filter out bad alert/confirm/prompt requests.\n", "And here's that in swift:\nfunc webView(webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String,\n initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {\n\n let alertController = UIAlertController(title: message,\n message: nil,\n preferredStyle: .alert)\n\n alertController.addAction(UIAlertAction(title: \"OK\", style: .cancel) {\n _ in completionHandler()}\n )\n\n self.present(alertController, animated: true, completion: nil)\n}\n\n", "\nImplement the protocol to your WKWebview container controller. WKUIDelegate\nAdd preference to WKWebview to enable javascript in viewDidLoad() as. \n// enable JS\nwebView.configuration.preferences.javaScriptEnabled = true\n\nRegister WKWebview UI Delegate in viewDidLoad() as \nself.webView.uiDelegate = self\n\nImplement the below delegate in your class.\nfunc webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: \nString, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> \nVoid) {\nlet alertController = UIAlertController(title: message,message: nil,preferredStyle: \n.alert)\n\nalertController.addAction(UIAlertAction(title: \"OK\", style: .cancel) {_ in \ncompletionHandler()})\n\nself.present(alertController, animated: true, completion: nil)\n}\n\n\n", "Here is the code in Swift 4.2\nfunc webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String,\n initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {\n\n let alertController = UIAlertController(title: message, message: nil,\n preferredStyle: UIAlertController.Style.alert);\n\n alertController.addAction(UIAlertAction(title: \"OK\", style: UIAlertAction.Style.cancel) {\n _ in completionHandler()}\n );\n\n self.present(alertController, animated: true, completion: {});\n}\n\n", "\nThe viewController\n\nViewController: UIViewController, WKUIDelegate, WKNavigationDelegate \n\n\nEnable JavaScript\n\nwebView.configuration.preferences.javaScriptEnabled = true\n\n\nIn the ViewDidLoad() Function add the below items\n\n webView.uiDelegate = self\n webView.navigationDelegate = self\n view.addSubview(webView)\n\n\nAdd the delegate as follows\n\n func webView(_ webView: WKWebView,\n runJavaScriptAlertPanelWithMessage message: String,\n initiatedByFrame frame: WKFrameInfo,\n completionHandler: @escaping () -> Void) {\n \n let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)\n let title = NSLocalizedString(\"OK\", comment: \"OK Button\")\n let ok = UIAlertAction(title: title, style: .default) { (action: UIAlertAction) -> Void in\n alert.dismiss(animated: true, completion: nil)\n }\n alert.addAction(ok)\n present(alert, animated: true)\n completionHandler()\n }\n\n" ]

[ 91, 61, 21, 16, 8, 7, 0 ]

[]

[]

[ "ios", "javascript", "wkwebview" ]

[ "This is because the && operator runs commands in sequence, meaning each command runs after the previous command exits. Your Project1 doesn't exit, it just sits there running indefinitely.\nYou need to run both your commands in parallel. One way to do this is to use & instead of &&. & will start the first command in the background instead of waiting for it to exit.\nWhen using & you should be careful of the order of operations. You can use parentheses to group sequential/parallel commands as necessary. I think this command might work for you:\n(cd Projects/Project1 && export PORT=3001) & (cd ../Project2 && export PORT=3000) & react-scripts start\n\n", "Go to project1 path in terminal and run project1 by yarn start.\nOpen project2 package.json file and edit scripts section as following:\n\"scripts\": {\n\"start\": \"set PORT=3001 && react-scripts start\",\nAnd run project2 by yarn start in its path too.\nHope this helps.\n" ]

[ 1, 0 ]

[]

[]

[ "frontend", "javascript", "package.json", "reactjs", "yarnpkg" ]

[ "If the app is killed and then restarted, the Navigation graph and the back stack will be reset. This means that any fragments or destinations that were on the back stack will be removed, and the NavController will no longer be able to find them.\nIn order to restore the back stack and avoid the exception, you can use the onSaveInstanceState() method in Fragment or Activity to save the state of the NavController and the back stack. This will allow to restore the stored state when the app is restarted.\nExample of implementation in a Fragment:\n@AndroidEntryPoint\nclass MyFragment : Fragment() {\n\n private val navController by lazy { findNavController() }\n\n override fun onSaveInstanceState(outState: Bundle) {\n super.onSaveInstanceState(outState)\n // Save the state of the NavController and the back stack\n navController.saveState(outState)\n }\n\n override fun onViewStateRestored(savedInstanceState: Bundle?) {\n super.onViewStateRestored(savedInstanceState)\n // Restore the state of the NavController and the back stack\n savedInstanceState?.let { navController.restoreState(it) }\n }\n}\n\nWith this implementation, the state of the NavController and the back stack will be saved when the app is killed and restored when the app is restarted, allowing the hiltNavGraphViewModels() function to find the correct destination and avoid the exception.\n", "To restore the back stack when using the hiltNavGraphViewModels delegate, you can use the popBackStack method in the FragmentManager to pop the current destination off the back stack. This will allow the hiltNavGraphViewModels delegate to find the destination with the specified ID and create an instance of the SharedViewModel correctly.\nHere is an example of how you can do this in your ScriptFragment class:\n@AndroidEntryPoint\nclass ScriptFragment : Fragment(R.layout.component_script) {\n\n private val viewModel: SharedViewModel by hiltNavGraphViewModels(R.id.scriptFragment)\n\n override fun onViewCreated(view: View, savedInstanceState: Bundle?) {\n super.onViewCreated(view, savedInstanceState)\n\n // Pop the current destination off the back stack to restore the back stack\n childFragmentManager.popBackStack()\n }\n\n fun navigateToDetail(navDirection: NavDirections) {\n findNavController().navigate(navDirection)\n }\n}\n\nIn this example, the popBackStack method is called in the onViewCreated method, which is called when the fragment's view is created. This ensures that the back stack is restored before the hiltNavGraphViewModels delegate is used to create an instance of the SharedViewModel.\nYou can also use the popBackStackImmediate method instead of the popBackStack method, which will pop the destination off the back stack immediately, without waiting for the fragment's view to be created. This can be useful if you want to restore the back stack as soon as the fragment is created, rather than waiting for the view to be created.\n@AndroidEntryPoint\nclass ScriptFragment : Fragment(R.layout.component_script) {\n\n private val viewModel: SharedViewModel by hiltNavGraphViewModels(R.id.scriptFragment)\n\n override fun onCreate(savedInstanceState: Bundle?) {\n super.onCreate(savedInstanceState)\n\n // Pop the current destination off the back stack to restore the back stack\n childFragmentManager.popBackStackImmediate()\n }\n\n fun navigateToDetail(navDirection: NavDirections) {\n findNavController().navigate(navDirection)\n }\n}\n\nIn this example, the popBackStackImmediate method is called in the onCreate method, which is called when the fragment is created. This ensures that the back stack is restored as soon as the fragment is created, before the hiltNavGraphViewModels delegate is used to create an instance of the SharedViewModel.\n" ]

[ 1, 0 ]

[]

[]

[ "android", "dagger_hilt", "kotlin" ]

[ "My recommendation for doing something like this, especially when you have a mix of types, is not to use --set but to use a second values yaml -- or amend the existing values yaml if you have one. Overriding the affinity via set gets quite messy and isn't very readable. But if you use a separate values yaml, then instead of:\nhelm install gitea gitea-charts/gitea -f ./values.yaml --set 'memcached.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms.matchExpressions.key.arch=x86_64' --set 'mariadb.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms.matchExpressions.key.arch=x86_64'\n\nYou would just have\nhelm install gitea gitea-charts/gitea -f ./values.yaml\n\n(if you amended the existing values.yaml)\nor\nhelm install gitea gitea-charts/gitea -f ./values.yaml -f ./affinity.yaml\n\n(if you chose to put the affinity in a separate yaml.)\n" ]

[ 0 ]

[]

[]

[ "helm3", "kubernetes", "kubernetes_helm" ]