teleren/devto huggingface dataset:
Reading Data from the Web
Tags: java, programming, learning, beginners
Published: 2024-06-14 11:52:08

Just like you can read data from a file on your computer, you can read data from a file on the Web. In addition to reading data from a local file on a computer or file server, you can also access data from a file that is on the Web if you know the file’s URL (Uniform Resource Locator—the unique address for a file on the Web). For example, [www.google.com/index.html](www.google.com/index.html) is the URL for the file **index.html** located on the Google Web server. When you enter the URL in a Web browser, the Web server sends the data to your browser, which renders the data graphically. Figure below illustrates how this process works.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/sm7enlvvfzfa2fhwxjmk.png)

For an application program to read data from a **URL**, you first need to create a URL object using the **java.net.URL** class with this constructor:

`public URL(String spec) throws MalformedURLException`

For example, the following statement creates a URL object for [http://www.google.com/index.html](http://www.google.com/index.html).

```
  try {
  URL url = new URL("http://www.google.com/index.html");
  }
  catch (MalformedURLException ex) {
  ex.printStackTrace();
  }
```

A **MalformedURLException** is thrown if the URL string has a syntax error. For example, the URL string “[http:www.google.com/index.html](http:www.google.com/index.html)” would cause a **MalformedURLException** runtime error because two slashes (**//**) are required after the colon (**:**). Note that the **http://** prefix is required for the **URL** class to recognize a valid URL. It would be wrong if you replace line 2 with the following code:

`URL url = new URL("www.google.com/index.html");`

After a **URL** object is created, you can use the **openStream()** method defined in the **URL** class to open an input stream and use this stream to create a **Scanner** object as follows:

`Scanner input = new Scanner(url.openStream());`

Now you can read the data from the input stream just like from a local file. The example in program below prompts the user to enter a URL and displays the size of the file.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/g1g25nlhbfttpxazazdr.png)

The program prompts the user to enter a URL string (line 8) and creates a **URL** object (line 11). The constructor will throw a **java.net.MalformedURLException** (line 21) if the URL isn’t formed correctly.

The program creates a **Scanner** object from the input stream for the URL (line 13). If the URL is formed correctly but does not exist, an **IOException** will be thrown (line 24). For example, [http://google.com/index1.html](http://google.com/index1.html) uses the appropriate form, but the URL itself does not exist. An **IOException** would be thrown if this URL was used for this program.
Manly Spirits CO.
Published: 2024-06-14 11:39:38

Capturing the harmony between carefree beach life and urban sophistication for which Manly is renowned, our Founders David, Vanessa and the **[Manly Spirits Co.](https://manlyspirits.com.au/
)** team create Australian Gins, Botanical Vodkas and Whiskies that rival the best in the world taking much of their inspiration from the stunning surrounding marine environment of the New South Wales coastline.
Case Study: Replacing Text
Tags: java, programming, learning, beginners
Published: 2024-06-14 11:38:36

Suppose you are to write a program named **ReplaceText** that replaces all occurrences of a string in a text file with a new string. The file name and strings are passed as command-line arguments as follows:

`java ReplaceText sourceFile targetFile oldString newString`

For example, invoking

`java ReplaceText FormatString.java t.txt StringBuilder StringBuffer`

replaces all the occurrences of **StringBuilder** by **StringBuffer** in the file **FormatString.java** and saves the new file in **t.txt**.

The program below gives the program. The program checks the number of arguments passed to the **main** method (lines 9–12), checks whether the source and target files exist (lines 15–26), creates a **Scanner** for the source file (line 30), creates a **PrintWriter** for the target file (line 31), and repeatedly reads a line from the source file (line 34), replaces the text (line 35), and writes a new line to the target file (line 36).

```
package demo;
import java.io.*;
import java.util.*;

public class ReplaceText {

	public static void main(String[] args) throws Exception {
		// Check command line parameter usage
		if(args.length != 4) {
			System.out.println("Usage: java ReplaceText sourceFile targetFile oldStr newStr");
			System.exit(1);
		}
		
		// Check if source file exists
		File sourceFile = new File(args[0]);
		if(!sourceFile.exists()) {
			System.out.println("Source file " + args[0] + " does not exist");
			System.exit(2);
		}
		
		// Check if target file exists
		File targetFile = new File(args[1]);
		if(targetFile.exists()) {
			System.out.println("Target file " + args[1] + " already exists");
			System.exit(3);
		}
		
		try (
			// Create input and output files
			Scanner input = new Scanner(sourceFile);
			PrintWriter output = new PrintWriter(targetFile);
		){
			while(input.hasNext()) {
				String s1 = input.nextLine();
				String s2 = s1.replaceAll(args[2], args[3]);
				output.println(s2);
			}
		}
	}

}

```

In a normal situation, the program is terminated after a file is copied. The program is terminated abnormally if the command-line arguments are not used properly (lines 9–12), if the source file does not exist (lines 15–19), or if the target file already exists (lines 23–26). The exit status code 1, 2, and 3 are used to indicate these abnormal terminations
(lines 11, 18, 25).
Bloating Doctor Suwanee GA
Published: 2024-06-14 11:36:45

Merus Gastroenterology & Gut Health LLC located in Suwanee GA specializes in providing top tier care for a range of gastrointestinal issues. Our expert team led by experienced doctors offers personalized treatment plans for constipation bloating and other stomach related ailments. We are dedicated to diagnosing and managing gastrointestinal diseases with precision and care. If you are seeking a specialist for stomach pain constipation or other gut health concerns in Suwanee trust Merus Gastroenterology & Gut Health LLC for compassionate comprehensive and cutting edge treatment options tailored to your needs.

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Tel: 770 400 0828

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Some ideas on conversion APIs
Published: 2024-06-14 11:35:58

all developers have at some point likely experienced the need to convert and deliver docs to others in software apps — and though there are a variety of file types, chances are that the required conversion is from an MS Word doc or PDF.

What are Document Conversion APIs?

These are APIs that can take a source input file in the form of docx, doc or PDF and convert them to PDF. As we have discussed before, converting to PDF has multiple pros, including consistent formatting, security and reduced file size.

In the blog post below, I wanted to show some of the available solutions out there: features, functionality, and benefits of each API.

enjoy,

https://apyhub.com/blog/exploring-top-document-conversion-apis
Thrashing - One Byte Explainer
Tags: devchallenge, cschallenge, computerscience, beginners
Published: 2024-06-14 11:32:29

*This is a submission for [DEV Computer Science Challenge v24.06.12: One Byte Explainer](https://dev.to/challenges/cs).*

## Explainer

Thrashing happens when too many processes are sent to the CPU, causing high utilization at first. However, as more processes keep coming, the CPU gets overwhelmed, and its efficiency drops sharply, sometimes even down to zero.

## Additional Context

References - https://takeuforward.org/operating-system/why-does-thrashing-occur/
https://stackoverflow.com/questions/19031902/what-is-thrashing-why-does-it-occur
Cheap Tow Truck
Published: 2024-06-14 11:32:25

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Resize the image
Published: 2024-06-14 11:30:26

Görüntü işleme ve derin öğrenme uygulamalarında genellikle görüntülerin boyutlarını yeniden boyutlandırmak önemlidir. İşte bazı nedenler:

Boyut Uyumu: Birçok derin öğrenme modeli, giriş olarak sabit boyutlarda görüntüler gerektirir. Bu nedenle, veri kümenizdeki tüm görüntülerin aynı boyutta olması önemlidir. Yeniden boyutlandırma, farklı boyutlardaki görüntüleri istenen sabit boyuta getirmek için kullanılır.

Hesaplama Verimliliği: Büyük boyutlardaki görüntülerin işlenmesi, daha fazla hesaplama gücü ve bellek gerektirir. Görüntüleri daha küçük boyutlara yeniden boyutlandırmak, hesaplama verimliliğini artırabilir ve modelin daha hızlı çalışmasını sağlayabilir.

Overfitting Önleme: Büyük boyutlardaki görüntüler, modelin ezberlemesine (overfitting) yol açabilir, özellikle de veri setiniz sınırlıysa. Yeniden boyutlandırma, gereksiz ayrıntıları azaltarak ve verinin genelleştirilebilirliğini artırarak overfitting'i azaltabilir.

Görüntü Kalitesi: Bazı durumlarda, orijinal görüntüler yüksek çözünürlüklü olabilir ve bu da gereksiz detaylarla dolu olabilir. Yeniden boyutlandırma, gereksiz detayları azaltarak ve görüntüyü daha işlenebilir hale getirerek işleme sürecini kolaylaştırabilir.

Veri Ön İşleme: Görüntü işleme uygulamalarında, veri önceden işlenir ve modele sunulur. Yeniden boyutlandırma, veri ön işleme adımının önemli bir parçasıdır ve genellikle görüntülerin modelin işlemesi için uygun hale getirilmesini sağlar.

Bu nedenlerle, görüntü boyutlarının yeniden boyutlandırılması, veri hazırlığı sürecinin önemli bir parçasıdır ve modelin verimli ve etkili bir şekilde çalışmasını sağlar.
extended unpacking in Python
Tags: python
Published: 2024-06-14 11:30:21

Python's extended unpacking feature, often denoted by the * operator, allows you to unpack iterable objects (like lists, tuples, strings) into individual elements or variables. This feature is useful in scenarios where you want to handle variable-length iterables or where specific elements need to be extracted from a larger sequence without explicitly indexing each element.


Real-World Use Case Scenario:
Let's consider a practical example to illustrate the usefulness of extended unpacking:

Use Case: Processing Multiple Return Values from a Function
Imagine you have a function that returns multiple values, but you are interested in only a few specific values and want to discard the rest. Extended unpacking makes it straightforward to handle this scenario.

```
# Function that returns multiple values
def get_statistics(data):
    mean = sum(data) / len(data)
    median = sorted(data)[len(data) // 2]
    mode = max(set(data), key=data.count)
    return mean, median, mode, min(data), max(data)

# Example usage of the function
data = [10, 20, 10, 30, 40, 50, 20, 10]
mean, median, *_, maximum_value = get_statistics(data)

print("Mean:", mean)
print("Median:", median)
print("Maximum Value:", maximum_value)
```


Explanation:
Function get_statistics:

Computes several statistical measures (mean, median, mode, min, max) based on the input data.
Extended Unpacking in Action:

mean, median, *_, maximum_value = get_statistics(data)
mean, median, and maximum_value are directly assigned the first, second, and last values returned by get_statistics(data) respectively.
*_, collects and discards any additional return values (mode, min(data)) into a list _. This is indicated by the * operator followed by a throwaway variable _.

Printing the Results:

```
print("Mean:", mean): Prints the calculated mean.
print("Median:", median): Prints the calculated median.
print("Maximum Value:", maximum_value): Prints the maximum value from the input data.
```


Advantages of Extended Unpacking:
Concise and Readable Code: It simplifies code by handling multiple return values succinctly.
Efficient Data Extraction: Allows selective extraction of required values while discarding others.
Flexibility: Handles variable-length data structures without explicitly indexing each element.


Conclusion:
Python's extended unpacking feature (* operator) enhances code clarity and flexibility, particularly in scenarios involving functions with multiple return values or operations on variable-length iterables. It's a powerful tool for managing and extracting data efficiently in real-world programming tasks.
Tow Master Toronto
Published: 2024-06-14 11:29:37


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comprehension in python
Published: 2024-06-14 11:29:35

```
liste = [1, 2, 3, 4, 5]

liste_carpilmis = [x * 2 for x in liste]

print(liste_carpilmis)
```



Bu kod, liste adlı listenin içindeki her bir elemanı 2 ile çarpar ve yeni bir liste olan liste_carpilmis içine bu çarpılmış değerleri ekler. Sonuç olarak, liste_carpilmis içindeki elemanlar, liste içindekilerin iki katı olacaktır. Yukarıdaki kod örneği çıktı olarak [2, 4, 6, 8, 10] verecektir.

Bu işleme comprehension denir.
HIGHER ORDER ARRAY METHODS IN JAVASCRIPT
Published: 2024-06-14 11:23:50

**WHAT ARE HIGHER ORDER METHODS?**

Higher order array methods in javascript are built-in methods that take a function as an argument or return a function as a result.

In Javascript we use many higher order methods that helps in several array manipulation tasks. Few of commonly used array methods are:
1. forEach()
2. map()
3. filter()
4. reduce()
5. find()
6. findIndex()
7. some()
8. every()
9. sort()
10. flatmap()

In this blog I am going to discuss about the most commonly asked higher order methods that are **map()**, **reduce()** and **filter()**.

**map()**

map() higher order method is used to map through an array and return a new array by performing some operation.

Syntax

```
map((value)=>{
})
map((value,index)=>{
})
map((value,index,array)=>{
})
```
Example

```
let a=[1,2,3,4]
let a1=a.map((value)=>{
console.log(value)
return value+2
})
let a2=a.map((value,index)=>{
console.log(value,index)
return value+2
})
let a3=a.map((value,index,array)=>{
console.log(value,index,array)
return value+2
})
```
**filter()**

filter() method is used to filter an array with values that passes the test.

Syntax

```
filter((value)=>{
})
filter((value,index)=>{
})
filter((value,index,array)=>{
})
```
Example

```
let a=[28,96,15,1,3,5]
let a1=a.filter((value)=>{
return value>10
})
console.log(a1)
```
**reduce()**

reduce() method is used to reduce an array into a single value. reduce() method usually takes two parameters as an argument.

Syntax

```
reduce((h1,h2)=>{
})
```
Example

```
let a=[1,4,5,3,7]
let a1=a.reduce((h1,h2)=>{
return h1+h2
})
```
Higher order methods are powerful tools that allow more readable, concise and function-style programming. map(), reduce() and filter() methods are some basic and more important methods which are usually asked in beginners interview.
Cervical Cancer Treatment In Pune- Dr Pratik Patil
Tags: cancerspecialist, drpratikpatil, oncologist
Published: 2024-06-14 11:16:41

In India, Cervical Cancer is the 2nd most common type of cancer identified in women. It is also called cervix cancer. Cervical cancer occurs in approximately 1 in 53 Indian women during their lifetime.[ **Dr. Pratik Patil – Cancer Specialist in Pune**](https://www.pratikpatil.co.in/) at Jupiter Hospital, Baner has treated many women who identified with cervical cancer from stage 2 to stage 4. Dr. Pratik Patil is one of the best Cervical cancer specialists in Pune has expertise in treating cervical cancer at various stages and offers excellent services such as surgery, radiotherapy, chemotherapy, and many more. Early Detection helps to easily cure cervical Cancer.


Dr. Pratik Patil is a proficient Cervical Cancer Doctor in identifying, diagnosing, and treating Cervical Cancer in all stages. He has been practising for 12 years in various hospitals such as Max Institute of Cancer Care, New Delhi, Sahydhri Group of Hospital, Pune, and Jupiter Hospital Baner, Pune. He has won various awards at conferences and is the author of multiple articles published in national and international journals. On this Page, Dr. Pratik Patil – An oncologist explains all about cervical cancer and helps to identify the symptoms and treatment options.

Overall, choosing Dr. Pratik Patil for [**Cervical cancer treatment in Pune**](https://www.pratikpatil.co.in/cervical-cancer-treatment-in-pune/) can give patients access to expert care, the latest treatments, and compassionate support, helping to improve their chances of successful treatment and a positive outcome.
f1 puanı
Published: 2024-06-14 11:19:35


F1 puanı, bir sınıflandırma modelinin performansını değerlendirmek için kullanılan bir ölçümdür. Hassasiyet (precision) ve geri çağırma (recall) değerlerinin harmonik ortalaması olarak hesaplanır.

Hassasiyet, modelin pozitif olarak tahmin ettiği örneklerin ne kadarının gerçekten pozitif olduğunu belirler. Hassasiyet, yanlış pozitiflerin sayısını azaltmayı amaçlar.

Geri çağırma, gerçek pozitiflerin ne kadarının doğru bir şekilde tanımlandığını belirler. Geri çağırma, yanlış negatiflerin sayısını azaltmayı hedefler.

F1 puanı, hassasiyet ve geri çağırmanın harmonik ortalamasıdır ve aşağıdaki formülle hesaplanır:

F1 = 2 * ((precision*recall)/(precision+recall))
 

F1 puanı, bir sınıflandırma modelinin hassasiyeti ve geri çağırması arasında bir denge sağlar. Bu nedenle, dengeli bir performans ölçüsü olarak kabul edilir. Özellikle, dengeli sınıflara sahip veri setlerinde, F1 puanı modelin performansını değerlendirmek için yaygın olarak kullanılır.
Plant Engineering Services - 3D CAD Modeling - Indovance
Tags: plantengineeringservices, cad, 3dcadmodeling, engineering
Published: 2024-06-14 11:13:24

[Indovance offers comprehensive plant engineering services including plant layout, equipment modelling, pipe routing, piping support, and skid modelling.
](https://www.indovance.com/plant-engineering)
How to create a database and access specific data from it?
Tags: webdev, database, php, beginners
Published: 2024-06-14 11:09:54

As I learned last time, how to create database using query in terminal.

```sql
mysql -uroot
/*Press enter key and then give input to terminal to create database.*/
create database myapp;
```
Now, I need to connect to the database so I can access the table and fetch the specific name.

To connect to the database, you'll need to use PHP code to establish a connection using PDO (PHP Data Objects) or mysqli (MySQL Improved Extension). Here's an example using PDO, firstly we have to know about PDO


## what are PDO's in PHP?

PDO (PHP Data Objects) is a PHP extension that provides a consistent interface for accessing and manipulating databases.
Here are some basic steps to get database accessible and to retrieve data

## Create a new PDO object: 

```php
$pdo = new PDO('dsn', 'username', 'password');
```
Here:
- 'dsn' (Data Source Name) specifies the database connection details (e.g. database type, host, database name)
- 'username' and 'password' are the credentials to authenticate by the database

Example:
```php
$pdo=newPDO('mysql:host=localhost;dbname=myapp', 'root', 'password');
```
This creates a connection to a MySQL database named "myapp" on the local host with the username "root" and password "password".

## Prepare a statement to retrieve the name

Here is the statement for retrieving the specific name of an applicant through database.

```php
$stmt = $pdo->prepare('SELECT name FROM applicants WHERE name = :name');
```

## Bind the parameter:

The specific name you're looking for

```php
$stmt->bindParam(':name', $name);

```

## Set the value of $name

Input the name that you want to search in database 

```php
$name = 'Ali Hasan';
```

## Execute query to fetch result

After inputing the name in `$name` variable then next step is execution of statement. As the execution is completed then fetch the result

```php
$stmt->execute();
$result = $stmt->fetch();

```

##  Display the result

Now you have to write the statement to display the result that you have fetched through database 

```php
echo $result['name']; 
```

## Close the database connection

At the end of search you have to close the connection through database using PDO variable with null value.

```php
$pdo = null;

```

I hope that you have understand it completely.