teleren/devto huggingface dataset:
The target context is not constructible. Add a default constructor or provide an implementation of IDbContextFactory.
Tags: entityframework, aspnetcore, aspnetmvc, development
Published: 2023-07-04 18:07:18

The error message you provided suggests that there is an issue with the construction of the 'MVCPracticeProject.Data.AppDatabaseContext' class. The error occurs because the class either lacks a default constructor or does not implement the 'IDbContextFactory' interface.

To resolve this issue, you have a couple of options:

1. Add a default constructor: If the 'AppDatabaseContext' class does not have a constructor defined, you can add a default constructor to it. A default constructor is a constructor with no parameters. Here's an example:

   ```csharp
   public class AppDatabaseContext : DbContext
   {
       public AppDatabaseContext()
       {
           // Initialization code, if needed
       }

       // Other members of the class
   }
   ```

   By adding a default constructor, you allow the class to be constructible without any arguments.

2. Implement IDbContextFactory: If you need more control over how the 'AppDatabaseContext' instance is created, you can implement the 'IDbContextFactory<TContext>' interface, where 'TContext' is the type of your database context class. The 'IDbContextFactory' interface provides a way to create instances of a database context outside of dependency injection. Here's an example:

   ```csharp
   public class AppDatabaseContextFactory : IDbContextFactory<AppDatabaseContext>
   {
       public AppDatabaseContext CreateDbContext(string[] args)
       {
           // Create and configure the database context instance
           var optionsBuilder = new DbContextOptionsBuilder<AppDatabaseContext>();
           optionsBuilder.UseSqlServer("your_connection_string");

           return new AppDatabaseContext(optionsBuilder.Options);
       }
   }
   ```

   In this example, you implement the 'CreateDbContext' method to create and configure an instance of 'AppDatabaseContext' based on your specific requirements.

Choose the option that best fits your needs and implement the necessary changes to resolve the error.
help me, to resolve this
Tags: webdev, beginners, programming, react
Published: 2023-07-04 18:01:21

hola este post es para consultar sobre un error que estoy recibiendo al crear un proyecto con vite, ejecutar npm install y luego ejecutar el comando npm run dev, recibo el siguiente error:
"React\Front\node_modules\.bin\" no se reconoce como un comando interno o externo,
programa o archivo por lotes ejecutable.
node:internal/modules/cjs/loader:959
  throw err;
  ^

Error: Cannot find module 'C:\Users\INNOVACIÓN\Documents\JhonM\Archivos de Backend\vite\bin\vite.js'
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:956:15)
    at Function.Module._load (node:internal/modules/cjs/loader:804:27)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:17:47 {      
  code: 'MODULE_NOT_FOUND',
  requireStack: []
}
Kubernetes networking interview questions
Published: 2023-07-04 17:54:40

Networking:

1 What is the role of a Container Network Interface (CNI) in Kubernetes, and how does it work?

2 Explain the difference between a pod network and a service network in Kubernetes.

3 What are the different network plugins 
4 What is the role of a Container Network Interface (CNI) in Kubernetes, and how does it work?

5 Explain the difference between a pod network and a service network in Kubernetes.

6 What are the different network plugins or solutions commonly used for Kubernetes networking? Can you name a few?

7 How does service discovery work in Kubernetes, and what role does DNS play in the process?

8 What is kube-proxy, and what is its purpose in Kubernetes networking?

9 Explain the concept of network
policies in Kubernetes. How are they implemented and what do they allow you to do?

10 How can you secure the communication between pods and nodes in a Kubernetes cluster?

11 What is an Ingress controller in Kubernetes, and how does it enable external access to services?

12 What is the purpose of a CNI plugin, and how does it integrate with container runtimes?

13 How can you troubleshoot networking issues in a Kubernetes cluster? What tools or commands can you use for debugging?plugins or solutions commonly used for Kubernetes networking? Can you name a few?

14 How does service discovery work in Kubernetes, and what role does DNS play in the process?

15 What is kube-proxy, and what is its purpose in Kubernetes networking?
Explain the concept of network policies in Kubernetes. How are they implemented and what do they allow you to do?

16 How can you secure the communication between pods and nodes in a Kubernetes cluster?

17 What is an Ingress controller in Kubernetes, and how does it enable external access to services?

18 What is the purpose of a CNI plugin, and how does it integrate with container runtimes?

19 How can you troubleshoot networking issues in a Kubernetes cluster? What tools or commands can you use for debugging?
A Quick Look Into Higher Order Functions
Tags: javascript, productivity, coding, webdev
Published: 2023-07-04 17:17:31

Out of all of the things I've learned on my journey as a software developer, higher order functions has been one of my favorites. Any function that takes in a function as a parameter or returns a function as an output can be considered a higher order function. We usually use these functions when dealing with arrays. Here's a little info on my three favorite higher order functions to use for a clean code environment. 

## the .Filter() method
The .filter() method is often used when we have an array of information and would like to return a new array, including only the elements that returned true to the conditions of the passed in function. The function that is passed into the filter method will have a parameter and the argument for that parameter will be an individual element in the array. Each element in the array will have a chance at this position. Once they are passed in as an argument, the function call will return either true or false. If the function call returns true, the element will be added to the new array. If the function call returns false, the element will not be added to the new array.

```
let array1 = [1, 2, 3, 4, 5, 6, 7, 8]

array1.filter(function(x){
    return x % 2 === 0
})
```
In this instance, the filter function will return true if the value is an even number. If the number is even, it will be pushed into the new array and if the number is odd it will not.

## the .Map() method
The .map() method is a bit different than filter, as it returns the result of calling a function on each element in the array. Whatever the result of calling the function on the current element is, will be added to a new array. 

For Example: 

```
let array1 = [1, 2, 3, 4, 5, 6, 7, 8]

array1.map(function(x){
    return x * 2
})

//output: [2, 4, 6, 8, 10, 12, 14, 16]
```
In the above example, the function that is called is requesting the elements to be multiplied by 2. Once the elements are multiplied by 2, they will be added into the new array.

##Last, but not least...the .forEach() method
The .forEach() method, unlike filter and map, doesn't return anything. forEach iterates over an array. It is often used to update elements in the array it is iterating over. For example:

```
let names = ['Jack', 'Peter', 'Rebecca'];

names.forEach(function(item, index){;
    names[index] = `Hi, my name is ${item}!`;
})

console.log(names);

//output:  [ 'Hi, my name is Jack!', 'Hi, my name is Peter!', 'Hi, my name is Rebecca!' ]
```
The example shows an array of names, that is updated to be an array of the people in the array introducing themselves. This was done by updating each element in the array using the forEach method.

In conclusion, higher order functions can be very useful when trying to write clean code and accessing specific things in arrays. If you would like to level up your coding skills, I would definitely recommend taking a look at these functions!
E-Learning Landing Page Design Using Figma | Autolayout + Component
Tags: ui, ux, uiux, uiweekly
Published: 2023-07-04 16:51:26

{% youtube cjVtMX_Pk7U %}
Hi guys, today we want to show E-learningLanding Page Design Using Figma Step by Step | Figma Tutorial Please, if you love it, support us with Like & Subscribe.🙏🙏❤️❤️

The e-learning landing page Figma design video showcases a modern and sleek design for an online learning platform. The video begins with an overview of the landing page, highlighting the key features and benefits of the platform.

The color scheme of the landing page is primarily white and blue, with pops of orange and green to add visual interest and highlight important elements. The layout is clean and organized, with a prominent hero banner at the top of the page featuring a striking image and a call-to-action button to encourage users to sign up.

Below the hero banner, there are several sections that provide information about the platform's features and benefits.

These sections are designed with a mix of text, icons, and images to make the content easy to digest and visually appealing. The design is also responsive, ensuring that the landing page looks great on all devices. Throughout the video, the designer showcases different design elements and interactions, such as hover effects and animations, that make the landing page feel dynamic and engaging. The overall design is user-friendly and intuitive, with clear navigation and a focus on guiding users towards the sign-up form.

Overall, the e-learning landing page Figma design video presents a compelling and professional design for an online learning platform, with a focus on usability and visual appeal.

Let's be friends and connect

📩 Subscribe:https://shorturl.at/BCTV8

📷 Instagram: https://www.instagram.com/soudemy/

📱 Behance: https://www.behance.net/soudemy

🐦 Twitter: https://twitter.com/SoudemyAcademy

In the comments, you can say what design you want so that we can prepare the video for you.
New CSS-in-JS lightweight packages for React and Preact
Tags: css, javascript, react, preact
Published: 2023-07-04 16:50:55

It can be advantageous to write some components with some local CSS rules. This package leverages the [native CSS nesting](https://developer.chrome.com/articles/css-nesting/) and produces a fast CSS-in-JS/Component solution: there is no parsing, just directly adding a `style` element to the `<head>` tag of the DOM.

We have produced a less than 700B package to write CSS-in-JS/Component for:

- `React`: https://github.com/ndrean/bau-react-css

- `Preact`: https://github.com/ndrean/bau-preat-css

These packages uses `document` so is not suited for SSR.

It exports the primitives: `css`, `styled`, `createGlobalStyles` and `keyframes`.

The api is very close to standard libraries.


## Class

You write a template CSS string and pass it to the `css` function to produce a `class`:

```js
const bluediv = css`
  background-color: bisque;
  color: midnightblue;
`;
```

You can use it:

```jsx
<p className={bluediv}>A nice paragraph</p>
```

## Styled component

You can use `styled` components in the form below. An example with an animation via `keyframes`:

```js
const rescale = keyframes`
  0% {transform: scale(0.5)}
  100% {transform: scale(1)}
`;

const AnimSurf = (props) => styled("span", props)`
  font-size: ${props.size}em;
  animation: ${rescale} 2s ease infinite;
`;
```

You can use it:

```js
<AnimSurf size={3}>🏄</AnimSurf>;
```

## Conditional classes

You have two ways to use it. Define a function or object that returns CSS strings:

```jsx
const styles = (props) => {
  base: `
    cursor: pointer;
    font-size: ${props.size ?? 1}em;
    border-radius: 0.3em;
    padding: 0.3em;
  `,
  danger: `
    color: red;
    animation: ${rescale} 1s ease infinite;
  `,
  disabled: `
    pointer-events: none;
    opacity: ${props.opacity};
  `;
}
```

You can write:

```jsx
const Btn = (props)=> styled('button', props)`
  ${styles(props).base +
  props.danger ? styles(props).danger : ""}
`

<Btn>Base button</Btn>
<Btn danger={true} onClick={()=> alert('danger')}>Danger button</Btn>
```

To make life easier, the primitive `styled` can read the props and sets the class.

```jsx
const Button = (props) => styled("button", props)`
  ${styles(props).base}
  ${styles(props)}
`;
```

We can use it:

```jsx
<Button size={3}>Base button</Button>

<Button
  disabled
  className={css`
    box-shadow: 6px -6px teal;
  `}
  >
  Disabled with shadow
</Button>
```

You can use reactive styles with the style prop, extend classes for styled components, define global styles. Check the Readme and the example.
BOWEL PROBLEMS
Tags: health, fitness, wellness, lifestyle
Published: 2023-07-04 16:45:01

Citric acid, artificial orange flavor, and aspartame are generally set up in colorful food and libation products. While they may contribute to the taste and agreeableness of certain products, they aren't generally used specifically for addressing bowel problems or constipation.

Citric acid is a naturally being acid set up in citrus fruits and is frequently used as a flavor enhancer and preservative in food and drinks. It can give a sour taste and is generally used in soft drinks, delicacies, and gravies. still, it doesn't have any direct impact on bowel problems or constipation.https://rb.gy/jw29i

Artificial orange flavor, as the name suggests, is a synthetic seasoning agent designed to mimic the taste of oranges. It's generally used in a variety of food and drink products, including potables, goodies, and snacks. Like citric acid, artificial orange flavor doesn't have any specific parcels to palliate bowel problems or constipation.

Aspartame is an artificial sweetener that's used as a sugar cover in numerous diet tonics, low- calorie potables, and sugar-free products. It's significantly sweeter than sugar but contains smaller calories. still, aspartame doesn't have any direct effect on bowel problems or constipation.

still, it's generally recommended to concentrate on salutary changes, adding fiber input, If you're passing bowel problems or constipation. It's always stylish to consult with a healthcare professional for substantiated advice and guidance regarding your specific situation.https://rb.gy/jw29i
Short note: haskell-- language family
Tags: functional
Published: 2023-07-04 16:35:31

Within Haskell, there was a movement called Simple Haskell, which emphasized using a small subset of the language. The IHP project seems to be an example.

Beyond Haskell, there is a crop of languages, some successful, which seem to also embody the idea.

* Pure: Elm, Gren, Roc
* Impure: Gleam, ReScript

The essentials usually include strong typing, mostly pure functions, immutable data, no macros, and avoiding exceptions. Some embrace a fully pure language. Some allow for type classes or are considering them.
Best ERP Software In UAE
Published: 2023-07-04 16:21:32

The most effective ERP program in the UAE is thought to be Hisaab-ERP. Enterprise resource planning (ERP) software called Hisaab is available in Dubai. suitable for small, medium, and big organizations across a variety of sectors, such as the automotive, retail, educational, and information technology industries. Integrated CRM, financial ledgers, sales and inventory management, report production, HR and payroll governance, electronic document management, and more are all included in the Hisaab ERP.
For More Info Visit: https://linkszenit.com
🚀💼 How I Landed My Dream Job as a Full-Stack Developer at Age 16
Tags: codingjourney, earlysuccess, passiondriven, inspiring
Published: 2023-07-04 16:18:10

Once upon a time, I faced academic challenges and struggled to find my way in school. Some even doubted my abilities, like that one teacher who humorously called me "feeble-minded." But then, everything changed during the lockdown when I decided to explore the world beyond gaming on my trusty laptop, courtesy of my kindergarten teacher. Little did I know, this decision would unlock a passion that would shape my future. 💡💻

## Embarking on a Coding Journey

My coding journey began with Python tutorials on 'Malayalam Tutorial' and 'Comedy com' and expanded to learning HTML, CSS, and JavaScript from sources like Debug Media and W3Schools. The 'Brototype' YouTube channel played a vital role in my growth as a developer, offering React tutorials where I learned how actual projects work and gained insights into building a successful tech career.

It all started with Python, as I delved into the captivating world of coding. I devoted myself to mastering various stacks, including MERN, Flutter, and web scraping, among others. With each new skill I acquired, my confidence soared, and my abilities grew stronger.



continue reading at :

{% embed https://www.linkedin.com/embed/feed/update/urn:li:share:7081703963745529856 %}
Difference between Aws Cloud Formation And Elastic BeanStalk (Simplified)
Tags: aws, cloudcomputing
Published: 2023-07-04 16:01:38


CloudFormation is like a set of instructions or a blueprint for building the castle. It helps you define and manage all the different pieces and components needed to create the castle. You can specify the number of walls, the size of the towers, the color of the bricks, and how everything fits together. CloudFormation is similar in that it allows you to define and manage all the AWS resources you need, such as EC2 instances, databases, and load balancers, in a structured and repeatable way. Just like following the Lego instructions, CloudFormation helps you create and manage your infrastructure consistently and efficiently.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3bbrclrjhzpp6jn5stg4.png)
On the other hand, Elastic Beanstalk is like a magic box that can build and manage the castle for you. Instead of dealing with individual Lego bricks, you can simply put your blueprint and all the required Lego bricks into the magic box. The box will take care of assembling the castle based on the blueprint, ensuring everything is in the right place and working together. Similarly, Elastic Beanstalk is a platform as a service (PaaS) offering from AWS that automates the deployment and management of your applications. You provide your application code, and Elastic Beanstalk handles all the underlying infrastructure provisioning, load balancing, scaling, and monitoring for you.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/c5dz19ll4yxwncbgp07a.png)
In summary, CloudFormation is like a blueprint that allows you to define and manage your AWS resources in a structured way, while Elastic Beanstalk is a platform that automates the deployment and management of your applications, taking care of the underlying infrastructure details for you.
docker image 만들 때 발생한 에러인데 원인은 나중에 찾아봐야겠다.
Published: 2023-07-04 15:54:12

```shell
 > [build 5/8] RUN npm install:
43.30 npm WARN deprecated wrench@1.3.9: wrench.js is deprecated! You should check out fs-extra (https://github.com/jprichardson/node-fs-extra) for any operations you were using wrench for. Thanks for all the usage over the years.
47.54 npm ERR! code 139
47.54 npm ERR! path /app/tmp/node_modules/@sveltejs/kit
47.54 npm ERR! command failed
47.54 npm ERR! command sh -c node postinstall.js
47.54 npm ERR! Segmentation fault
47.54
47.54 npm ERR! A complete log of this run can be found in: /root/.npm/_logs/2023-07-04T15_52_07_658Z-debug-0.log
------
Dockerfile:7
--------------------
   5 |     WORKDIR /app/tmp
   6 |     COPY . .
   7 | >>> RUN npm install
   8 |       # && npm run prisma_migrate_deploy \
   9 |     RUN  npm run build
--------------------
ERROR: failed to solve: process "/bin/sh -c npm install" did not complete successfully: exit code: 139
```
What is trailingslash in next.js
Tags: nextjs, staticsite, konfycode
Published: 2023-07-04 15:39:04

Usually, when you are doing static site generation out of nextjs, the route will be handled via nextjs (Thanks to Next Link). But, when you are trying to point a small division to link inside this might not work. 

What's the issue:
Let's say you have a url, www.xyz.com/about. This will automatically handled by nextjs to be www.xyz.com/about/ . Can you see the difference ? yes. the "/" after "about" (/about/). This is what we call as "trailing slash"

What nextjs do here?
It automatically redirects things with trailing slashes to their counterpart (www.xyz.com/about) will be redirected to ( www.xyz.com/about/)

pages inside nextjs expects to render components with trailing slashes which might cause an issue here

How to solve it?
By adding trailingslash: true in next.config.ts

Want to read more about it ?
Here is the link - [(https://nextjs.org/docs/app/api-reference/next-config-js/trailingSlash)]
Improve your app by using validations
Tags: webdev, api, security, architecture
Published: 2023-07-04 15:22:12

> _They're akin to bouncers at a nightclub, ensuring adherence to age, dress code, and proper conduct before granting entrance._

We can depict validations as a series of rules applied to data in transit to or from an application.

The paramount objective of these rules is to uphold the quality, security, and consistency of the data. Thus, it is highly advisable to devise interfaces with validations, as they, among other benefits, assist us to:

- Deter security breaches.
- Enhance user interaction.
- Facilitate maintenance and scalability.

There are assorted methods and degrees of implementing these validations, as well as a broad spectrum of tools that adapt according to the complexity and format of the data. Some of the most prevalent approaches encompass verifying:

- The content types in the request (Content-type).
- The parameters and bodies of the requests.
- The headers and response codes.
- The formats and structures of the data.

Even if you're merely consuming an API, embedding validations into your application will yield substantial value, as you'll be providing [immediate feedback](https://dev.to/gajaguar/optimistic-ui-and-the-balance-between-speed-and-precision-19jl) while averting unnecessary requests.

---

The application of data validations in APIs is a highly commendable practice that considerably augments the quality of applications and instills confidence in the users.
Cypress Installation Self-Signed Certificate/ Proxy Issue
Tags: webdev, cypress, testing
Published: 2023-07-04 15:12:25

Recently when I was trying to install Cypress for my project, it was failed due to self-signed certificate or proxy issue as below:

![Error while installing Cypress](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/oj5rnscthpzvc5q8yypl.png)


I've tried to set the **NODE_EXTRA_CA_CERTS** to point to my certificate in local as environment variable but it's still not working. 


After digging around the documentation, I found a way to solve this problem as below:-

1.Download the cypress zip file for the version you want to install from the official cypress website
![Download Cypress zip file from Official Cypress Website](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/x8b41t76u8bam6nw0mx3.png)

2.Set the **CYPRESS_INSTALL_BINARY** to the cypress zip location that you've downloaded at .npmrc or you can use npm set command to set the variable.

- Set CYPRESS_INSTALL_BINARY in .npmrc
```
CYPRESS_INSTALL_BINARY=/path/to/cypress.zip
```

- Set CYPRESS_INSTALL_BINARY using npm
```
npm config set CYPRESS_INSTALL_BINARY /path/to/cypress.zip
```

3.Use **npm install** command to install the cypress.Then it will install the downloaded cypress zip instead of downloading from the source.

- Install cypress with npm
```
 npm install --save-dev cypress
```

Thank you and see you next time :)