teleren/devto huggingface dataset:
Create Edge Label in Apache AGE
Tags: apacheage, database, postgres, graphdatabase
Published: 2023-04-01 02:16:24

Edge Labels are used to identify edges and group similar edges to gather. For instance, if we want to store relation between employees and department in any organization, we can store that relation in edges and we can label those edges as `works_in`. This will enable us to query edge data faster. Because when we write query to get any particular edge data from particular edge label, the Database Management System will be able to quickly go to all edges of that particular label and access the desired edge.

**General Form:**
`SELECT create_elabel('GraphName','LabelName');`

**Explanation:**
The first argument of the function `create_elabel` is the graph name and second argument is the desired name of the label.

**Important Thing to Remember:**
We have seen queries like:

`SELECT *
FROM cypher('graph_name', $$
MATCH (a:VertexLabelName), (b:VertexLabelName)
WHERE a.PropertyName = 'AnyThing' AND b.PropertyName = 'AnyThing'
CREATE (a)-[e:works_in {edgePropertyName:'Anything', ...}]->(b)
RETURN e
$$) as (e agtype);`

The label provides here is `works_in`. When we run such queries, this newly created edge's data will be stored in the same place where data of other edges with `works_in` label are stored.
If `works_in` label does not exist already, this query will create a `works_in` label automatically and store that edge data against `works_in` label.

For more details visit: https://age.apache.org/overview/

**AGE Github Link:** https://github.com/apache/age

**AGE Viewer Github Link:** https://github.com/apache/age-viewer
Create Vertex (Node) Label in Apache AGE
Tags: apacheage, graphdatabase, database, postgres
Published: 2023-04-01 02:05:24

Vertex Labels are used to identify nodes and group similar node to gather. For instance, if we want to store information about employees in any organization, we can store that information in nodes and we can label those nodes as employee. This will enable us to query node data faster. Because when we write query to get any particular node data from particular vertex/ node label, the Database Management System will be able to quickly go to all nodes of that particular label and access the desired node.

**General Form:**
`SELECT create_vlabel('GraphName','LabelName');`

**Explanation:**
The first argument of the function `create_vlabel` is the graph name and second argument is the desired name of the label.

**Important Thing to Remember:**
We have seen queries like:

`SELECT *
FROM cypher('graph_name', $$
CREATE (:Person {name: 'Andres', title: 'Developer'})
$$) as (v agtype);`

The label provides here is `Person`. When we run such queries, this newly created node's data will be stored in the same place where data of other nodes with `Person` label are stored.
If `Person` label does not exist already, this query will create a `Person` label automatically and store that node data against `Person` label.

For more details visit: https://age.apache.org/overview/

**AGE Github Link:** https://github.com/apache/age

**AGE Viewer Github Link:** https://github.com/apache/age-viewer
5 reasons to choose Django for your next web development project
Published: 2023-04-01 01:33:04

As a beginner in web development, I recently completed my first project using Python and Django, and I can confidently say that it was an excellent choice. Django is a high-level Python web framework that provides everything a developer needs to build secure and scalable web applications. In this blog post, I will share five reasons why you should choose Django for your next web development project.

1. Rapid Development

One of the significant advantages of Django is that it allows developers to create web applications quickly. It comes with many built-in features and libraries that enable developers to create complex applications with ease. Django's Model-View-Controller (MVC) architecture separates the application's data, business logic, and user interface, making the code more organized and easier to maintain.

2. Scalability

Django is designed to handle large-scale web applications. It provides tools and features to help developers optimize their code and improve the application's performance. Django's ability to handle high traffic and manage multiple requests makes it an excellent choice for companies that are planning to scale their web applications.

3. Security

Django is known for its excellent security features. It provides protection against common web application vulnerabilities like cross-site scripting (XSS), cross-site request forgery (CSRF), and SQL injection attacks. Django also has built-in user authentication and authorization features that make it easy to secure your web application.

4. Versatility

Django is a versatile web framework that can be used for a wide range of web applications, from simple blogs to complex e-commerce websites. It is also flexible enough to work with different databases, front-end frameworks, and web servers.

5. Active Community

Django has a large and active community of developers who are constantly improving the framework and creating new plugins and libraries. The community provides excellent documentation, tutorials, and support for developers, making it easy to learn and use Django.

In conclusion, Django is an excellent choice for web development projects. As someone who just completed their first Python/Django project, I can attest to the benefits of using this framework. It provides rapid development, scalability, security, versatility, and a supportive community. If you're looking for a robust and reliable web framework, Django is definitely worth considering.
The Ultimate List of Coding Tools and Resources
Tags: codenewbie, tooling, programming, tutorial
Published: 2023-04-01 01:18:25

[Read Medium Article](https://medium.com/@taradwyer17/the-ultimate-list-of-coding-tools-and-resources-be3a6b600ced)

As a programmer, you know how important it is to have the right tools at your disposal. Whether you’re just starting out or you’re a seasoned professional, having access to the best resources and tools can make all the difference in the quality and speed of your work. That’s why we’ve put together this ultimate list of coding tools and resources that you need to know about.

1. Integrated Development Environments (IDEs)
IDEs are essential tools for developers, providing a one-stop shop for writing, testing, and debugging code. Some popular IDEs include Visual Studio Code, JetBrains IntelliJ IDEA, and Eclipse.

2. Source Code Repositories
Source code repositories allow developers to collaborate on code, store their work, and track changes. GitHub and GitLab are two of the most popular options.

3. Text Editors
Text editors are lightweight alternatives to IDEs, and they’re great for quick code snippets or simple projects. Some popular text editors include Sublime Text, Notepad++, and Atom.

4. Debuggers
Debuggers help you identify and fix errors in your code. Some popular debuggers include Xdebug, Zend Debugger, and Firebug.

5. Testing Tools
Testing is a crucial part of the development process, and there are many tools available to help you automate and streamline the process. Some popular testing tools include JUnit, TestNG, and Selenium.

6. Package Managers
Package managers make it easy to install, manage, and update the various libraries and tools you use in your projects. Some popular package managers include npm, pip, and composer.

7. Code Snippet Libraries
Code snippet libraries provide a wealth of code snippets and solutions that can help you write code more efficiently. Some popular code snippet libraries include Stack Overflow, GitHub Gists, and CodePen.

8. Code Refactoring Tools
Code refactoring tools help you optimise your code, making it more readable and maintainable. Some popular code refactoring tools include ReSharper, CodeRush, and Eclipse JDT.

9. Continuous Integration and Continuous Deployment (CI/CD) Tools
CI/CD tools automate the process of building, testing, and deploying code, ensuring that your software is always up-to-date and working properly. Some popular CI/CD tools include Jenkins, Travis CI, and CircleCI.

10. Performance Optimisation Tools
Performance optimisation tools help you identify and eliminate performance bottlenecks in your code. Some popular performance optimisation tools include New Relic, AppDynamics, and Apache JMeter.

In conclusion, having the right tools and resources can make all the difference in your coding experience. Whether you’re just starting out or you’re a seasoned professional, this list provides a great starting point for finding the tools and resources you need to succeed.
Tom's theory
Published: 2023-04-01 00:53:51

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Why TypeScript?
Published: 2023-04-01 00:42:09

TypeScript has emerged as one of the most popular programming languages in recent years. Developed and maintained by Microsoft, TypeScript is a superset of JavaScript that adds optional static typing and class-based object-oriented programming features to JavaScript. This article explores the benefits of TypeScript and why it is important for developers to learn and use this language.

## **1-Type Safety**
Type safety is one of the primary reasons developers choose TypeScript. By adding static types, TypeScript enables developers to catch errors during the development process, rather than discovering them during runtime. This can save a lot of time and effort in debugging and helps ensure the code works as expected.

## **2-Improved Code Maintainability**
TypeScript improves code maintainability by enabling developers to write cleaner, more structured code. TypeScript's syntax encourages developers to write code that is easy to read and understand. Additionally, TypeScript's type system makes it easier to refactor code, as it can identify where changes need to be made throughout the codebase.

## **3-Increased Productivity**
TypeScript increases developer productivity by providing features such as code completion, automatic code generation, and improved tooling support. These features can save developers time and effort, allowing them to focus on more important tasks.

## **4-Better Collaboration**
TypeScript makes it easier for teams of developers to collaborate on projects. By providing a clear structure and type system, TypeScript reduces the likelihood of miscommunication and confusion between team members. This can result in faster development times and better quality code.

## **5-Strong Community Support**
TypeScript has a strong community of developers who contribute to its development and provide support through forums and other resources. This community has created a vast array of libraries and tools that make it easier for developers to use TypeScript in their projects.

**

## 6-Difference between TypeScript and JavaScript:
**

Here is a small code example that illustrates the difference between TypeScript and JavaScript:

```
// JavaScript
function greet(name) {
  console.log("Hello, " + name);
}
greet("Ahmed");

// TypeScript
function greet(name: string) {
  console.log("Hello, " + name);
}
greet("Ahmed");
```
Getting Started with Snowflake on AWS
Tags: database, aws
Published: 2023-03-31 23:28:36

Spinning up a virtual machine on AWS EC2 can be a quick and cost-effective way to run your applications and services in the cloud. One of the most popular use cases for EC2 instances is to run web servers, and one of the best web servers available today is Snowflake. In this article, we will guide you through the process of spinning up a Snowflake instance on AWS EC2.

## What is Snowflake?

Snowflake is a cloud-based data warehousing solution that allows users to store, analyze, and share large amounts of data in real-time. It is designed to be fast, flexible, and scalable, making it a popular choice for companies of all sizes. Snowflake is also built to work with a wide range of data sources, including structured, semi-structured, and unstructured data.

## Spinning Up a Snowflake Instance on AWS EC2:

To spin up a Snowflake instance on AWS EC2, you will need to follow these steps:

## Step 1: Choose an EC2 Instance Type

The first step is to choose an EC2 instance type that is suitable for running Snowflake. Snowflake recommends using an instance type with at least 4 vCPUs, 16 GB of RAM, and 100 GB of storage. You can choose the instance type that best fits your needs and budget.

## Step 2: Launch an EC2 Instance

Once you have selected an EC2 instance type, you can launch an EC2 instance. To do this, navigate to the EC2 dashboard on the AWS Management Console and click on the "Launch Instance" button. Follow the prompts to configure your instance, including selecting your preferred operating system, configuring your storage, and setting up your security groups.

## Step 3: Install Snowflake

After you have launched your EC2 instance, you can install Snowflake on it. Snowflake provides a detailed guide on how to install and configure Snowflake on AWS EC2 instances, which you can find in their documentation. Follow the guide to install Snowflake and configure your instance.

## Step 4: Connect to Snowflake

Once you have installed Snowflake, you can connect to it using the Snowflake web interface. You can access the web interface by navigating to the public IP address of your EC2 instance in a web browser. Log in to Snowflake using your Snowflake account credentials.

## Step 5: Load Data

After you have connected to Snowflake, you can start loading data into it. Snowflake provides several options for loading data, including loading data from files, streaming data, and loading data from other databases.

## Conclusion:

Spinning up a Snowflake instance on AWS EC2 is a straightforward process that can be done in a matter of minutes. By following the steps outlined in this article, you can quickly set up a Snowflake instance on AWS EC2 and start storing, analyzing, and sharing data in real-time. Whether you are a small business or a large enterprise, Snowflake on AWS EC2 can provide you with a fast, flexible, and scalable data warehousing solution.
Typescript gives hard time to vue'ds
Published: 2023-03-31 21:08:58

👋 Hey there! Are you a Vue.js developer struggling with TypeScript? Well, you're not alone my friend! 😂 It's no secret that TypeScript can give Vue a hard time with its strict typing rules, but fear not, there are ways to make it work seamlessly.

💡 First off, make sure to take advantage of Vue's built-in TypeScript support. This will give you access to all the type information you need to make your app a success. But let's be honest, sometimes it's just not that simple. 😩

👨‍💻 One common problem that Vue developers face with TypeScript is the infamous "Property 'x' does not exist on type 'y'" error. You know the one I'm talking about! 😅 But don't worry, there are workarounds for this, such as using the any type or casting your variables to the correct type.

💻 Another issue you might run into is with Vue's .vue files. TypeScript doesn't play well with them out of the box, but fear not my friends, there are tools like Vetur and Volar that can help you out. 🙌

🤖 And if all else fails, don't be afraid to reach out to the friendly Vue and TypeScript communities for help. They're always willing to lend a hand and share their experiences. 😊

So there you have it, TypeScript might give Vue a hard time, but with a little bit of effort and some helpful tools, you can make it work seamlessly. Keep on coding, my friends! 👨‍💻
Fixing OpenVPN3 bug in Arch
Tags: openvpn, archlinux, fix, linux
Published: 2023-03-31 23:21:34

After I did the last update in Arch, OpenVPN3 client stopped working and gave me the following error:

```
** ERROR ** Failed calling D-Bus method UserInputProvide: GDBus.Error:net.openvpn.v3.sessions.error: Backend VPN process has died.  Session is no longer valid.
```

I found that this error is still not fixed, but you can easily do a workaround. 

**So why does this error happen?**
It seems there is a problem in glib2 v.2.76.1 (which is what I got updated recently) and it generates a Null in one of the functions OpenVPN uses for the authentication. So, after authenticating, that error appears and client crashes.

**How to fix it?**
While we wait for a better solution, one easy fix for this is to downgrade glibc to version 2.74.6. Just be aware that this has to be a temporary downgrade while a fix is available, and that downgrading might break your system.

To downgrade, you can install the downgrade command from the AUR, and then do the following:

```
sudo downgrade 'glib2=2.74.6'
```

This will downgrade your glib to that version which works perfectly with current OpenVPN 3. Once connected, I advise to upgrade again to current glib2 to avoid possible errors in other apps which depend on newer version. 
You can upgrade using the same downgrade tool with:

```
sudo downgrade 'glib2=2.76.1'
```

This will probably pop a window which lets you select that package from the cache. Just reinstall and you're good to go.

I have used this as a temporary fix, and I hope OpenVPN will get updated soon to support current glib.

Also, I read in some blogs that this issue also happens on other Linux distributions, but I don't use them so I can't provide a solution for them. This fix of downgrading should work on any Linux, let me know if you do it on other distros.

Hope this helps someone.
Regards,
Damian
10 Best Practices for Writing Clean and Maintainable React Code
Tags: webdev, react, javascript, programming
Published: 2023-03-31 23:19:38


React has become one of the most popular JavaScript libraries for building web applications. However, as React projects grow in size and complexity, it becomes increasingly important to write clean and maintainable code to ensure long-term success. In this article, I will outline 10 best practices for writing clean and maintainable React code.

**Use Functional Components:**
Functional components are simpler, easier to read, and more efficient than class components. They are also less error-prone because they don't have state or lifecycle methods.

**Use Pure Components:**
Pure components help reduce unnecessary re-renders, which can improve performance. They also make your code more predictable by ensuring that the component's output depends only on its input.

**Use State Management Libraries:**
State management can become difficult and error-prone in large-scale React applications. Using a state management library such as Redux, MobX, or Recoil can simplify state management and make it easier to reason about.

**Use Prop Types:**
Using Prop Types can help catch bugs early and improve code reliability. Prop Types can be used to ensure that the correct data is passed between components and can provide helpful error messages when something goes wrong.

**Use Context Sparingly:**
Context is a powerful tool for passing data between components, but it can also make code harder to understand and debug. Use context sparingly and only when necessary.

**Use React Hooks:**
React Hooks provide a way to use state and other React features in functional components. Hooks can help simplify code and make it more readable by removing the need for classes and lifecycle methods.

**Use CSS Modules:**
CSS Modules allow you to write modular CSS that is scoped to a specific component. This can help prevent CSS conflicts and make it easier to maintain styles.

**Use PureComponent for Performance:**
PureComponents are optimized for performance and should be used in situations where performance is critical. By using PureComponent, you can reduce the number of unnecessary re-renders and improve application performance.

**Use Server-Side Rendering:**
Server-side rendering can help improve performance and provide a better user experience. By rendering your React application on the server, you can reduce the time it takes for the initial page load.

**Write Unit Tests:**
Unit tests can help catch bugs early and ensure that your code works as expected. By writing unit tests for your React components, you can improve code reliability and make it easier to maintain.

**Conclusion:**
By following these 10 best practices, you can write clean and maintainable React code that is easier to read, debug, and scale. Whether you're building a small application or a large-scale project, these best practices can help ensure the long-term success of your React application.
How to Hide Features from Production Environment in React
Tags: react, braziliandevs, javascript
Published: 2023-03-31 23:09:16

I writed, in brazilian portuguese, at Inventare, an article about [testing into production](https://dev.to/inventare/redesign-do-revisae-testando-em-producao-15op) with feature flag. Currently, we have an old project writed in React (create-react-app) with two environments, test (validation) and production and, in some cases, we need to hide some things from the production environment.

The project use `env-cmd` package to run the react scripts with different `.env` files to get the projects :

```json
{
  ...
  "scripts" {
    "start": "env-cmd -f ./.env react-scripts start",
    "build": "env-cmd -f ./.env.production react-scripts build",
    "build:test": "env-cmd -f ./.env react-scripts build",
    ...
  }
  ...
}
```

Then, into the `.env` and into the `.env.production` files we can add an variable:

```
# .env
...
REACT_APP_TEST_ENV=true
```

```
# .env.production
...
REACT_APP_TEST_ENV=false
```

Now, we can create an component to monitor this env variable and conditional render an element:

```jsx
const TestOnly = ({ children }) => {
  const isTestingEnv = process.env.REACT_APP_TEST_ENV === 'true';

  if (!isTestingEnv) {
    return null;
  }
  return children;
};

export default TestOnly;
```

Then, finally, we can encapsulates the feature with the `<TestOnly />` component, for example:

```jsx
return (
  <div>
    <TestOnly>
      <button>This is visible only in test env.</button>
    </TestOnly>
  </div>
);
```