teleren/devto huggingface dataset:
Checking union types in Typescript
Tags: typescript, beginners, refactoring
Published: 2022-12-28 06:17:42

It is a common use case where we check for multiple strings matches in if statements, as shown in the example below.

```typescript
const exampleMovement: string = '';

if (exampleMovement === 'up' || exampleMovement === 'down' || exampleMovement === 'left' || exampleMovement === 'right') {
	// application logic
}
```

---

We can clean it up by introducing an array and using the includes function.

```typescript
if (['up', 'down', 'left', 'right'].includes(exampleMovement)) {
	// application logic
	// exampleMovement type is string
}
```
The downside is `exampleMovement` type is still `string`.

---

If we want to narrow the type, we can use a [type predicates](https://www.typescriptlang.org/docs/handbook/2/narrowing.html#using-type-predicates).

```typescript
const movementTypeCheck = (movement:string): movement is 'up' | 'down' | 'left' | 'right' => {
	return ['up','down','left','right'].includes(movement);
}

if (movementTypeCheck(exampleMovement)) {
	// application logic
	// exampleMovement type is union of 'up','down','left','right'
}
```
Could an FPGA board be used to fully control a 3D printer?
Tags: beginners, fpga, tutorial, 3d
Published: 2022-12-28 06:17:41

Yes, it is possible to use an FPGA (Field-Programmable Gate Array) board to fully control a 3D printer. An FPGA board is a type of programmable hardware that can be used to implement custom digital circuits. It can be used to control the various components of a 3D printer, such as the motors that move the print head and the extruder, the heated bed, and the temperature sensors.

To use an [FPGA](https://www.icdrex.com/products/) to control a 3D printer, you would need to write custom digital logic to implement the control algorithms and communication protocols necessary to operate the printer. This would typically involve writing code in a hardware description language (HDL) such as VHDL or Verilog, and then synthesizing the code to create a bitstream that can be loaded onto the FPGA.

Once the FPGA is programmed and installed in the 3D printer, it can be used to control all of the printer's functions in real-time, providing fast and precise control over the printing process. However, using an FPGA to control a 3D printer can be a complex and time-consuming process, and may require a high level of expertise in both [FPGA design](https://www.icdrex.com/tag/fpga-design/) and 3D printer control.

If you want to learn more about FPGas, you can go here. View source more: https://www.icdrex.com/resources/
Expectations V Reality
Tags: html, css, newbie, challenge
Published: 2022-12-28 05:59:39

For such a simple design, I am having a hard time getting this formatted properly when coding the actual landing page. I had to restart because I felt like I was crowding the code with divs and writing WAY too much CSS. I went with flex to avoid over complicating the code and it was not working as expected. Any advice on getting the elements to line up nicely?
Polkadot dApp development
Tags: polkadotdapp, dapponpolkadot
Published: 2022-12-28 05:38:04

Polkadot is a decentralized network protocol that allows multiple blockchain systems to interoperate with each other. It aims to provide a more secure, scalable, and flexible platform for decentralized applications (dApps).

To develop a [dApp on Polkadot](https://www.leewayhertz.com/polkadot-dapp-development/), you will need to use a programming language that is supported by the platform. Some of the most popular languages for building dApps on Polkadot include Rust, WebAssembly (WASM), and Substrate.

To get started with dApp development on Polkadot, you can follow these steps:

- Familiarize yourself with the Polkadot ecosystem and its core concepts, such as Relay Chains, Parachains, and Collators.
- Choose a programming language that is suitable for your dApp development needs.
- Set up a development environment on your computer, which typically involves installing the necessary tools and libraries.
- Learn how to use the Substrate framework to build your dApp. Substrate is a modular blockchain development framework that provides a set of tools and libraries for building decentralized applications on Polkadot.
- Test and debug your dApp using a local development chain or a testnet.
- Deploy your dApp to the Polkadot mainnet once it is ready.

There are many resources available online to help you learn more about dApp development on Polkadot, including official documentation, tutorials, and community forums. It is also helpful to join a community of developers who are working on similar projects, as they can provide valuable insights and support.
UI View
Published: 2022-12-28 05:33:49

UIView can be defined as an object by using which we can create and manage the rectangular area on the screen. We can have any number of views inside a view to create a hierarchical structure of the UIViews.
The UIView is managed by using the methods and properties defined in the UIView class that inherits UIKit.
Views are the fundamentals of iOS application development, and that's why UIView is one of the most used object in the object library. The views are the basic building block of the iOS application, which renders the content within its bounds rectangle and also handles any interaction with the content.

**Layout and Sub view management**
We can embed one or more subviews into the UIView. The appearance of the subviews can be managed by managing the appearance of the super view.
We can define the auto-layout rules to govern the size and positioning of the view hierarchy on different iOS devices.
**Event Handling**
A view can respond to the touch and another kind of event since it is the subclass of UIResponder.
We can add the gesture recognizers for the uiview, such as UITapGestureRecognizer.

## GestureRecognizer


- **Tap gestures**

Tap gestures detect one or more fingers touching the screen briefly. The fingers involved in these gestures must not move significantly from the initial touch points, and you can configure the number of times the fingers must touch the screen.

```
   let tapped=UITapGestureRecognizer(target: self, action: #selector(IsTapped))
        tapped.numberOfTapsRequired=2
        AppHeader.addGestureRecognizer(tapped)

 @objc func IsTapped(){
        AppHeader.backgroundColor = .green
    }
```

- **long-press gestures**
 Long-press (also known as press-and-hold) gestures detect one or more fingers (or a stylus) touching the screen for an extended period of time. 

```
 let tapped=UILongPressGestureRecognizer(target: self, action: #selector(IsTapped))
        AppHeader.addGestureRecognizer(tapped)

```

- **swipe gestures**

A swipe gesture occurs when a person moves one or more fingers across the screen in a specific horizontal or vertical direction. Use the UISwipeGestureRecognizer class to detect swipe gestures.

```
        let swipe=UISwipeGestureRecognizer(target: self, action: #selector(IsTapped))
        swipe.direction = .left
        AppBody.addGestureRecognizer(swipe)

```
One To Many Polymorphic Relationship Laravel 9
Tags: laravel, php, mysql, codenewbie
Published: 2022-12-28 05:30:00

In this article, we will see one to many polymorphic relationship in laravel 9. 

A one-to-many polymorphic relation is similar to a typical one-to-many relation. 

The child model can belong to more than one type of model using a single association. One to many polymorphic relationship is used when a model belongs to more than one other model on a single association model.

For example, users of your application can comment on posts and videos. Using polymorphic relationships, you may use a single comments table to contain comments for both posts and videos. using morphMany() and morphTo() you can access data.

So, let's see laravel 9 one to many polymorphic example, polymorphic relationship in laravel 9, morphMany in laravel 9, morphTo in laravel 9, laravel 9 relationship example.

In this example, we will create posts, comments, and videos tables. All tables are connected with each other like the below screenshot and we are creating migration and model for all tables and retrieving data using one to many polymorphic relationships in laravel 6, laravel 7, and laravel 8.


![One To Many Polymorphic Relationship Laravel 9](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1a2nlj83s0yzpv8yov6f.png)
Update on ✨Ramen 🍜✨ A new JavaScript Framework!
Tags: webdev, javascript, programming, api
Published: 2022-12-28 04:41:29

Brief about what it is:
You can read the [first Article](https://dev.to/ohayouarmaan/i-am-creating-a-new-javascript-framework-46af) I wrote about Ramen if you want to, But basically it's a framework which I'm working on for making backend APIs. And for now I'm just trying to re-write the [Express.js](https://github.com/expressjs/express) code.

So in the past few hours I've achieved a lot of new developments in the codebase which are mentioned below

### Done:
* [ x ] Initialize the project
* [ x ] Create a request class
* [ x ] Create a server class
* [ x ] add a test file
* [ x ] Create a response class
* [ x ] Create a middleware system
* [ x ] Add query parameters
* [ x ] add respond features in the response class

### TODO:
* [  ] plan future features
* [  ] think about database connectivity

so basically I was able to add the request object, the response object and a lot of different stuff. So basically you can now go to the url http://ip:addr/foo/bar and if you have a route defined as `/foo/:x` you can get the value of x via `Request.params.x`, And not just this You can also get the query parameters which means You can go to `/foo/bar?a=b` in this case the route parameter `x` is `bar` and the query parameter `a` is `b`. And you can also write responses with different status codes!
From that I mean you can just do `Response.write({'Error': 'Auth failed 💔'}, 401)` and it will send a response to the corresponding request with a status code of 401 and a json data of the following. And it automatically detects the type of data you are trying to send, Which means that you can do `Response.write('<h4>Hey my Content-Type is "text/html"</h4>', 200)` and it will send a text/html type response with a status code of 200 (which if you don't specify it's going to fallback to 200 anyways.)

Now the future plans If I think can be the following
* Adding cookies
* Adding a view engine
* Sending file type responses

Although I'm still trying to figure out what else am I supposed to add. Let me know in the comments below for what are the different stuffs I'm supposed to add to this framework!

And until further post here's a cute cat for you :3
![cute cat :3](https://media.giphy.com/media/C9x8gX02SnMIoAClXa/giphy.gif)
AppDelegate & SceneDelegate
Published: 2022-12-28 04:35:16

## AppDelegate

- 
This is still main entry point for iOS 13+ application. System calls appdelegate methods for application level life cycle events.

- 
In apple’s default templet, you can find below three methods

**func application(_:didFinishLaunchingWithOptions:) -> Bool**

- 
This method is used to perform application setup.
- 
In iOS 12 or earlier, you might have used this method to create and configure a UIWindow object and assigned a UIViewController instance to the window to make it appear.Now appdelegate is no longer responsible for this

**func application(_:configurationForConnecting:options:) -> UISceneConfiguration**

- 
This method is called whenever your application is expected to supply a new scene, or window for iOS to display.
- 
This method is not called when your app launches initially, it’s only called to obtain and create new scenes

**func application(_:didDiscardSceneSessions:)**

- 
This method is called whenever a user discards a scene.

- 
You can use this function to dispose of resources that these scenes used, because they’re not needed anymore.


## SceneDelegate

There are several methods in the SceneDelegate.swift file by default:

- 
**sceneDidDisconnect(_:)** 
is called when a scene has been disconnected from the app (Note that it can reconnect later on.)

- 
**sceneDidBecomeActive(_:)**
 is called when the user starts interacting with a scene, such as selecting it from the app switcher

- 
**sceneWillResignActive(_:)**
 is called when the user stops interacting with a scene, for example by switching to another scene

- 
**sceneWillEnterForeground(_:)**
 is called when a scene enters the foreground, i.e. starts or resumes from a background state

- 
**sceneDidEnterBackground(_:)**
 is called when a scene enters the background, i.e. the app is minimised but still present in the background.

**sample**

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vryif1uka1x7akidde0t.png)

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/rs0x2pi5j84ztdwx7p62.png)
Recipe for Farewell Ep 9 ดู ย้อน หลัง ฟรี ดู K-SERIES ออนไลน์ ฟรี ในคุณภาพระดับ HD-THAI
Tags: webdev, python, programming, tutorial
Published: 2022-12-28 04:33:19

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ประวัติโดยย่อ
ละคร: Recipe for Farewell (ชื่อเรื่องภาษาอังกฤษ) / It May Be A Little Spicy Today (ชื่ออย่างไม่เป็นทางการ)
แปลเป็นอักษรโรมัน: Oneuleun Jom Maewoolji Molla
ฮันกึล: 오늘은 좀 매울지도 몰라
ผู้กำกับ: ลี โฮ-แจ
ผู้เขียนบท: Kang Chang-Rae (สารคดี), Lee Ho-Jae
เครือข่าย:วัชชา
ตอน: 12
วันที่วางจำหน่าย: 1 ธันวาคม 2565 --
รันไทม์:
ภาษา: เกาหลี
ประเทศ: เกาหลีใต้
เรื่องย่อเรื่องย่อโดย AsianWiki Staff ©
Chang-Wook (Han Suk-Kyu) อายุ 40 ปี เขาทำงานเป็นนักแปลและอาจารย์ผู้สอนด้านมนุษยศาสตร์ ภรรยาของเขา (คิม ซอ-ฮยอง) ป่วยเป็นมะเร็งลำไส้ระยะสุดท้าย นอกจากนี้เธอยังมีปัญหาในการรับประทานอาหารเนื่องจากปัญหาการย่อยอาหาร เธอขอให้ชางอุกทำอาหารให้เธอทุกวัน แม้ว่าสิ่งเดียวที่เขารู้วิธีทำคือราเมง ชางอุคเริ่มทำอาหารให้ภรรยาของเขา และเธอก็กินอาหารของเขาเล็กน้อย ซึ่งเขาปรุงด้วยความรักและความเอาใจใส่

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Mastering Any Programming Language
Published: 2022-12-28 04:09:15

> *If I tell you that I normally learn a programming language in a single night and start playing around with its advanced features you would not believe me, but here is the truth to this story*. 

Mastering a programming language requires a combination of learning the syntax and semantics of the language, practicing by writing code, and applying the language in real-world projects. Here are some steps you can follow to become proficient in a programming language:

Start by learning the basics of the language, including its syntax and how to use basic data types and control structures. You can find resources such as tutorials, textbooks, and online courses to help you get started.

Practice by writing code and working on small projects. This will help you get a feel for the language and how to use it to solve problems.

Learn about more advanced concepts and features of the language, such as object-oriented programming, exception handling, and data structures.

Work on larger projects to apply what you have learned and gain experience with real-world development. This could be a personal project or a project for a class or job.

Keep learning and improving. As you gain experience, you may find that you want to learn more about specific areas of the language or learn additional languages. Stay up to date with new developments in the field and continue to challenge yourself.

Remember that mastering a programming language is a journey, not a destination. It takes time and practice to become proficient, but by following these steps and staying committed, you can develop the skills you need to succeed as a programmer.
Adding Context to Sentry for Simplified Issue Analysis
Tags: go, beginners, programming, webdev
Published: 2022-12-28 04:00:17

## Context in Sentry
Refers to additional information that can be added to an error message or message sent to Sentry. Context usually contains information that is useful for <u>analyzing and resolving</u> issues in your application.

<img width="100%" style="width:100%" src="https://media.giphy.com/media/XIahGhbK5A685fyr8D/giphy.gif">

Examples of information that can be added as context include:

- User information: Information about the user experiencing the issue.

- Extra data: Additional data that is useful for analyzing the issue.

> Context can be added to an error message or message using methods such as SetExtra, and SetUser in Sentry.

```go
package main

import (
	"log"
	"time"
	"errors"
	"github.com/getsentry/sentry-go"
)

func main() {
	err := sentry.Init(sentry.ClientOptions{
		Dsn: "YOUR DSN",
		Debug: true,
	})
	if err != nil {
		log.Fatalf("sentry.Init: %s", err)
	}
	defer sentry.Flush(2 * time.Second)

	sentry.WithScope(func(scope *sentry.Scope) {

		// set context character
		scope.SetContext("character", map[string]interface{}{
			"name":        "Mighty Fighter",
			"age":         19,
			"attack_type": "melee",
		})

		//add extra data additional
		scope.SetExtra("extra_key", "extra_value")
        //set user id
		scope.SetUser(sentry.User{ID: "user_id_example"})
		//exemple error, fake err
		err = errors.New("Example Error 4")
		//capture error and level error
		scope.SetLevel(sentry.LevelError)
		sentry.CaptureException(err)
	})	
}
```

Some examples in implementation when sending to sentry.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/x12vnw1cvzsendh7b4wz.png)

- Set context character information

```go
// set context character
scope.SetContext("character", map[string]interface{}{
	"name":        "Mighty Fighter",
	"age":         19,
	"attack_type": "melee",
})
```
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/k4r12bndr4lbnce7uf72.png)

- Set extra data additional

```go
//add extra data additional
scope.SetExtra("extra_key", "extra_value")
```
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xzzozy012flssnnfxh5k.png)

- Set user id

```go
scope.SetUser(sentry.User{ID: "user_id_example"})
```
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nyo6ey6mhk755k9vnwif.png)


Learn more about context Sentry.
https://docs.sentry.io/platforms/go/enriching-events/context/
Learn more about conventions for common contexts in the contexts interface developer documentation.
https://develop.sentry.dev/sdk/event-payloads/contexts/
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Tags: webdev, javascript, programming
Published: 2022-12-28 03:33:26

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Gen: Acţiune, Aventuri, Fantastic, SF
Regia: James Cameron
Distributie: Zoe Saldana, Kate Winslet, Sigourney Weaver, Sam Worthington
Sinopsis Avatar: Calea apei

La câțiva ani după lupta cu pământenii, extratereștrii de pe Pandora își continuă liniștiți viețile. Jake Sully trăiește fericit în noul lui corp alături de iubita lui. Fericirea celor de pe Pandora este însă pe cale sa fie distrusă de o nouă amenințare. North este liderul unui clan de extratereștrii necunoscuți care își spun "venusieni". Acestia încep încetul cu încetul să provoace mari pagube pe Pandora, iar Jake realizează că trebuie să ia masuri împotriva fiarelor spațiale. Pe locuitorii de pe Pandora îi așteaptă o bătălie epică în care Jake va trebui să riște totul, poate chiar și propria lui viață.

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How to use APP_INITIALIZER token in Angular
Tags: angular, typescript, javascript, webdev
Published: 2022-12-28 03:28:12

APP_INITIALIZER is a powerful feature in Angular that allows developers to perform tasks before the application starts. It is essentially a way to run code during the bootstrapping process of an Angular app. One common use case for APP_INITIALIZER is to load configuration data from a server or a local file. This data is often required for the application to function properly, and it is important to have it available as soon as possible.

To use APP_INITIALIZER, you need to import the APP_INITIALIZER token from the @angular/core module and use it to provide a factory function. This factory function should return a Promise that resolves when the initialization is complete.

Let's understand this in detail using an example:
```typescript
import { APP_INITIALIZER, NgModule } from '@angular/core';
import { HttpClientModule } from '@angular/common/http';

export function loadConfig(http: HttpClient) {
  return () => http.get('/config').toPromise();
}

@NgModule({
  imports: [HttpClientModule],
  providers: [
    {
      provide: APP_INITIALIZER,
      useFactory: loadConfig,
      deps: [HttpClient],
      multi: true
    }
  ]
})
export class AppModule {}
```
In this example, the loadConfig function uses the HttpClient to make a request to a server to retrieve the configuration data. The function returns a Promise that resolves when the data has been retrieved.

It is important to note that the APP_INITIALIZER factory function should be marked as multi: true, as this allows multiple initializers to be run. If you do not mark the factory function as multi: true, only the last initializer registered will be run.

And that's it! I hope you found this post useful. Incase you have any questions or queries, feel free to drop a comment.