teleren/devto huggingface dataset:
行为型设计模式-命令 Command
Tags: designpatterns
Published: 2023-09-06 08:38:10



### 简介

client 发出的请求，都被封装成 Command 对象，每个 Command 对象代表一种操作，Command 具体操作的是 Receiver 对象内的方法。实现动作与目标隔离和复用的目的。

### 角色

- 抽象 Command
- Receiver 真正干活的
- 具体 Command
- Invoker 维护 commands 队列

### 类图

图中所示，client 调用 Invoker，Invoker 中维护了 commands 队列，每个 command 实际操作的是 TextEditor 这个真正的 Receiver。

![类图](https://deb-gmi.oss-cn-beijing.aliyuncs.com/img/20210409003131.png)

### 代码

```php
interface Command
{
    public function execute(): void;
}

class SimpleCommand implements Command
{
    private $payload;

    public function __construct(string $payload)
    {
        $this->payload = $payload;
    }

    public function execute(): void
    {
        echo "SimpleCommand: See, I can do simple things like printing (" . $this->payload . ")\n";
    }
}

class ComplexCommand implements Command
{
    private $receiver;

    private $a;

    private $b;

    public function __construct(Receiver $receiver, string $a, string $b)
    {
        $this->receiver = $receiver;
        $this->a = $a;
        $this->b = $b;
    }

    public function execute(): void
    {
        echo "ComplexCommand: Complex stuff should be done by a receiver object.\n";
        $this->receiver->doSomething($this->a);
        $this->receiver->doSomethingElse($this->b);
    }
}

class Receiver
{
    public function doSomething(string $a): void
    {
        echo "Receiver: Working on (" . $a . ".)\n";
    }

    public function doSomethingElse(string $b): void
    {
        echo "Receiver: Also working on (" . $b . ".)\n";
    }
}

class Invoker
{
    private $onStart;

    private $onFinish;

    public function setOnStart(Command $command): void
    {
        $this->onStart = $command;
    }

    public function setOnFinish(Command $command): void
    {
        $this->onFinish = $command;
    }

    public function doSomethingImportant(): void
    {
        echo "Invoker: Does anybody want something done before I begin?\n";
        if ($this->onStart instanceof Command) {
            $this->onStart->execute();
        }

        echo "Invoker: ...doing something really important...\n";

        echo "Invoker: Does anybody want something done after I finish?\n";
        if ($this->onFinish instanceof Command) {
            $this->onFinish->execute();
        }
    }
}

$invoker = new Invoker();
$invoker->setOnStart(new SimpleCommand("Say Hi!"));
$receiver = new Receiver();
$invoker->setOnFinish(new ComplexCommand($receiver, "Send email", "Save report"));

$invoker->doSomethingImportant();
```

output:

```
Invoker: Does anybody want something done before I begin?
SimpleCommand: See, I can do simple things like printing (Say Hi!)
Invoker: ...doing something really important...
Invoker: Does anybody want something done after I finish?
ComplexCommand: Complex stuff should be done by a receiver object.
Receiver: Working on (Send email.)
Receiver: Also working on (Save report.)
```
Generate and share code snippets for VS Code using the latest AI models
Published: 2023-09-06 06:47:37

## Overview
[Code Snippets AI](https://appsumo.8odi.net/QyArQo) is a Visual Studio Code extension that can generate, refactor, debug, optimize, and store code for your team.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v9js389gkp738dislf8a.png)

All you gotta do to integrate an AI programming assistant into Visual Studio Code is install the Code Snippets AI extension.

With this extension, you’ll be able to choose between four leading AI models: ChatGPT, GPT-4, Google PaLM 2, and Claude.

You can refactor any code in seconds just by highlighting it and letting the AI assistant suggest new ways to optimize.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/l06es7o38jmvl9x8tw2b.png)
Relax. Pause. Reflect. Put your preview environments on pause and help reduce your consumption 🌱
Tags: webdev, productivity, devops, news
Published: 2023-09-06 08:29:43

## Help reduce resource consumption. Put your preview environments on pause. ✨

Put your preview environments on pause and take back control of your resource usage to help reduce your consumption, meet the new Paused Environments feature from Platform.sh. 

In the coming weeks you will be able to **pause your idle preview environments** to limit that resource consumption instantly. We’re also going to automate this process for preview environments which have been idle for 14 days or more without being redeployed to minimize resource usage across the thousands of projects we host. Dramatically reducing the number of machines required to run our infrastructure across all of our regions—hooray! 

👉 Ready to find out how pausing works? **[Let's go!](https://platform.sh/blog/help-reduce-resource-consumption-put-your-preview-environments-on-pause/?utm_source=devto&utm_medium=organic_social&utm_campaign=platformsh_blog&utm_id=paused_environments)** 👏
行为型设计模式-责任链 Chain Of Responsibility
Tags: designpatterns
Published: 2023-09-06 08:28:30



### 简介

使多个对象都有机会处理请求，从而避免请求的发送者和接收者之间的耦合关系。将这些对象连成一条链，并沿着这条链传递该请求，直到有一个对象处理它为止。

### 角色

- Handler 接口
    
    定义处理方法签名，设置nextHandler方法
    
- Concrete Handler 具体类
    
    实现各自handler逻辑
    
- BaseHandler 封装一层handler，可有可无

### 类图

如图，在 client 中，将 handler 一个个串起来，每个 handler 处理完后可决定是否向后传递。

![类图](https://deb-gmi.oss-cn-beijing.aliyuncs.com/img/20210409000504.png)

### 代码

```php
interface Handler
{
    public function setNext(Handler $handler): Handler;

    public function handle(string $request): string;
}

abstract class AbstractHandler implements Handler
{
    private $nextHandler;

    public function setNext(Handler $handler): Handler
    {
        $this->nextHandler = $handler;
        
        return $handler;
    }

    public function handle(string $request): string
    {
        if ($this->nextHandler) {
            return $this->nextHandler->handle($request);
        }

        return "";
    }
}

class MonkeyHandler extends AbstractHandler
{
    public function handle(string $request): string
    {
        if ($request === "Banana") {
            return "Monkey: I'll eat the " . $request . ".\n";
        } else {
            return parent::handle($request);
        }
    }
}

class SquirrelHandler extends AbstractHandler
{
    public function handle(string $request): string
    {
        if ($request === "Nut") {
            return "Squirrel: I'll eat the " . $request . ".\n";
        } else {
            return parent::handle($request);
        }
    }
}

class DogHandler extends AbstractHandler
{
    public function handle(string $request): string
    {
        if ($request === "MeatBall") {
            return "Dog: I'll eat the " . $request . ".\n";
        } else {
            return parent::handle($request);
        }
    }
}

function clientCode(Handler $handler)
{
    foreach (["Nut", "Banana", "Cup of coffee"] as $food) {
        echo "Client: Who wants a " . $food . "?\n";
        $result = $handler->handle($food);
        if ($result) {
            echo "  " . $result;
        } else {
            echo "  " . $food . " was left untouched.\n";
        }
    }
}

$monkey = new MonkeyHandler();
$squirrel = new SquirrelHandler();
$dog = new DogHandler();

$monkey->setNext($squirrel)->setNext($dog);

echo "Chain: Monkey > Squirrel > Dog\n\n";
clientCode($monkey);

echo "\nSubchain: Squirrel > Dog\n\n";
clientCode($squirrel);
```

output:

```
Chain: Monkey > Squirrel > Dog

Client: Who wants a Nut?
  Squirrel: I'll eat the Nut.
Client: Who wants a Banana?
  Monkey: I'll eat the Banana.
Client: Who wants a Cup of coffee?
  Cup of coffee was left untouched.

Subchain: Squirrel > Dog

Client: Who wants a Nut?
  Squirrel: I'll eat the Nut.
Client: Who wants a Banana?
  Banana was left untouched.
Client: Who wants a Cup of coffee?
  Cup of coffee was left untouched.
```
🚀 Revolutionize Your Dev Workflow: Prioritizing Impact Over Busywork 🚀
Tags: productivity, beginners, programming, career
Published: 2023-09-06 08:02:59

Are You reevaluating the importance of work to be done 
or simply taking the next item from the backlog?

✨ Features may lose relevance over time.
✨ Refactoring may not improve the code, but only move things around.
✨ Complex features may benefit only a handful of users.
✨ Automation's ROI might take decades.
✨ Spending days on a minor bug, which appears once a year.
✨ Spending all grooming session on debating between 2 or 3 story points.
✨ Blocking a big & important MR by asking to add a newline for readability.

You get the picture, right? 
Your career shouldn't be spent on diminishing returns. 
Prioritize work based on its impact, outcomes, and objectives. 🎯

Benefits:
1️⃣ Skyrocket your productivity.
2️⃣ Meet those deadlines with ease.
3️⃣ Keep your customers happy.
4️⃣ Inspire an incredibly motivated team.
5️⃣ Reduce the risk of burnout.

And as for the minor tasks left undone?
Remember, every minor work not completed is a major accomplishment in itself as You can dedicate time & energy for work that matters! 🙌

Let's make our work count! 💪
Deep Dive into Filament Resources - FilamentPHP v3 Tutorial
Tags: tutorial, laravel, beginners, webdev
Published: 2023-09-06 08:01:08

In this YouTube video, we're taking a deep dive into Filament, a powerful resource management tool for web development. As a Laravel developer with a keen interest in web development specifics, you'll find this exploration of Filament's capabilities particularly enlightening.

Filament is a fantastic addition to your toolkit, offering seamless integration with PHP, JavaScript, and even Rust if you're inclined towards more performance-oriented solutions. In this video, we'll walk you through the ins and outs of Filament, demonstrating how it can streamline your web development projects and enhance your productivity.

Topics we'll cover include:
- Installing and setting up Filament in your Laravel project.
- Exploring Filament's intuitive user interface for managing resources.
- Leveraging PHP to create custom resource management features.
- Incorporating JavaScript to enhance the interactivity of your web applications.
- And if you're up for it, we'll discuss potential ways to integrate Rust for those high-performance tasks.

Whether you're a seasoned developer or just starting your journey in web development, this video will provide valuable insights into harnessing the power of Filament. So, don't forget to hit that like button, subscribe to our channel for more web development tips and tutorials, and let's dive deep into Filament together!
[Youtube Video](https://youtu.be/9GBXqWKzfIM)
string implementation in different jdk version
Tags: java, discuss
Published: 2023-09-06 07:43:54

Why the output of this code in jdk11 is true but in jdk19 is false?

```
String s3 = new String("1") + new String("1");
s3.intern();
String s4 = "11";
System.out.println(s3 == s4);
```
Traits in php--bible perspective
Tags: php, laravel, wordpress
Published: 2023-09-06 07:39:24

#### What are traits in php ?
Traits solves the problem where php classes can't inhrerit behaviours or use properties, methods, etc from other classes except the parent class it extends to. 

Traits in php makes a class have access to methods, properties in othe classes. 
Let's use the bible story to elaborate this: We are not native  isrealites so by default we as gentile class can't have any inheritance with the jews. But traits (Jesus Christ ) has come to bridge this gap. Take for example :


The child class, isrealites extends (inherits) from the parent class, God
```php
class isrealites extends God {
}

```

Gentile class (actually, Gentile Nation) wants to have access to the abrahamic promises but can't. Then Jesus Christ came in for us --Traits !

So create a trait class:

```php
trait JesusChrist {

public function salvationPromise() {
echo "the promise is unto you and to your children, children";
}

public function prosperityPromise() {
echo "I will above all things that thou mayeth prosper even as thy soul prospereth ";
}

public function freedomFromSin() {
echo "If the son shall make you free, you shall be free indeed";
  }
}
```

For gentiles to use this trait as well inherit all the  promises, we provide a "Jesus Trait" for them. 

```php
// ....
class Gentiles {
	use JesusChrist;
}

$gentile  = new Gentiles();

//pick one promise 
echo $gentile-> freedomFromSin();

```
A full code will look like this:

```php

trait JesusChrist {

public function salvationPromise() {
echo "the promise is unto you and to your children, children";
}

public function prosperityPromise() {
echo "I will above all things that thou mayeth prosper even as thy soul prospereth ";
}

public function freedomFromSin() {
echo "If the son shall make you free, you shall be free indeed";
  }
}

class Gentiles {
	use JesusChrist;
}


$gentile  = new Gentiles();

//pick one promise 
echo $gentile-> freedomFromSin();
```
Traits are used to access methods and properties that extend the capabilities of a class. 

More resources to learn from [PHP DOC](https://www.php.net/manual/en/language.oop5.traits.php#:~:text=Traits%20are%20a%20mechanism%20for,living%20in%20different%20class%20hierarchies.)
Liv Pure - Weight Loss Results, Ingredients, Complaints & Warnings?
Tags: webdev, javascript, beginners, programming
Published: 2023-09-06 07:38:08

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Making car simulation game.
Published: 2023-09-06 07:28:05

I created this car simulation game in two week, using unity engine with Zenject and my own ETEngine frame work.
The things I love most in this project is that it can load asset directly from resource with DOP principle make the the game run with very impressive performance.
Next step: I gonna stress test the game with over 1000 house meshes. Hope the game could manage to run at 30FPS to 60FPS on my weak android phone.
#unity #unity3d #unitydeveloper #developer #gameengine #OOP #DOP #tonicatfelidae #nekoniiistudio
https://www.youtube.com/watch?v=99jdJ0B5lRc
结构型设计模式-桥接(模块化) Bridge
Tags: designpatterns
Published: 2023-09-06 05:07:26


### 简介

桥接模式可将一系列紧密相关的、水平等级的类，转变为组合关系，形成垂直等级关系。

如抽象类 Color、Shape，分别有 RedColor、BlueColor、CircleShape、SquareShape 的实现类，那么想创建红色方形，则可以将 Shape 类中持有 Color 引用，动态向 Shape 中注入 Color 实现即可。

否则分别实现 RedCircleShape、RedSquareShape、BlueCircleShape、BlueCircleShape 的话，假如再新增一个维度，实现类则需要修改，并新增很多实例。

桥接更直接的说就是组件化，模块化，让 A 中持有 B 的引用，B 可以随意调换，形成不同组合。

![类图](https://deb-gmi.oss-cn-beijing.aliyuncs.com/img/20210408191800.png)

### 角色

- 抽象实体 A
    
    A 中包含实体 B 的引用
    
- A 的具体实现
- 抽象实体 B
- B 的具体实现

### 类图

图中的 Remote 和 Device 中间，就是桥接。Remote 内部持有一个 Device 的引用：device。通过 set 不同的 device，实现 Remote 与 Device 的不同组合。

![类图](https://deb-gmi.oss-cn-beijing.aliyuncs.com/img/20210408192813.png)

### 代码

```php
class Abstraction
{
    protected $implementation;

    public function __construct(Implementation $implementation)
    {
        $this->implementation = $implementation;
    }

    public function operation(): string
    {
        return "Abstraction: Base operation with:\n" .
            $this->implementation->operationImplementation();
    }
}

class ExtendedAbstraction extends Abstraction
{
    public function operation(): string
    {
        return "ExtendedAbstraction: Extended operation with:\n" .
            $this->implementation->operationImplementation();
    }
}

interface Implementation
{
    public function operationImplementation(): string;
}

class ConcreteImplementationA implements Implementation
{
    public function operationImplementation(): string
    {
        return "ConcreteImplementationA: Here's the result on the platform A.\n";
    }
}

class ConcreteImplementationB implements Implementation
{
    public function operationImplementation(): string
    {
        return "ConcreteImplementationB: Here's the result on the platform B.\n";
    }
}

function clientCode(Abstraction $abstraction)
{
    echo $abstraction->operation();
}

$implementation = new ConcreteImplementationA();
$abstraction = new Abstraction($implementation);
clientCode($abstraction);

$implementation = new ConcreteImplementationB();
$abstraction = new ExtendedAbstraction($implementation);
clientCode($abstraction);
```

output:

```
Abstraction: Base operation with:
ConcreteImplementationA: Here's the result on the platform A.
ExtendedAbstraction: Extended operation with:
ConcreteImplementationB: Here's the result on the platform B.
```
Các khái niệm chính trong nestjs
Tags: nestjs
Published: 2023-09-06 07:13:51

NestJS là một framework Node.js mã nguồn mở, có thể mở rộng, linh hoạt, tiến bộ để xây dựng ứng dụng phía server. Nó sử dụng TypeScript và rất linh hoạt để xây dựng các hệ thống phụ trợ hấp dẫn và đòi hỏi nhiều yêu cầu.

Dưới đây là một số khái niệm chính trong NestJS:

- Module: Module là một cách để tổ chức ứng dụng của bạn. Mỗi module có thể chứa các bộ điều khiển, dịch vụ, pipe và các thành phần khác.
- Controller: Controller là một lớp chịu trách nhiệm xử lý các yêu cầu HTTP.
- Service: Service là một lớp cung cấp dữ liệu và chức năng cho các bộ điều khiển.
- Pipe: Pipe là một công cụ mạnh mẽ có thể được sử dụng để chuyển đổi hoặc xác thực dữ liệu.
- Dependency injection: Dependency injection là một kỹ thuật lập trình trong đó các phụ thuộc của một thành phần được cung cấp cho nó bởi một bên thứ ba.
- Routing: Routing là quá trình định tuyến các yêu cầu HTTP đến các bộ điều khiển.
- Middleware: Middleware là các lớp được thực thi trước hoặc sau khi một yêu cầu HTTP được xử lý bởi một bộ điều khiển.
- Microservices: Microservices là một kiến trúc ứng dụng trong đó ứng dụng được chia thành các dịch vụ nhỏ, độc lập.

Dưới đây là một số khái niệm chính khác trong NestJS:

- ORM: ORM là một công cụ giúp bạn truy cập cơ sở dữ liệu bằng cách sử dụng các đối tượng.
- Security: NestJS cung cấp một số tính năng và công cụ để giúp bạn bảo mật ứng dụng của mình.
- Testing: NestJS cung cấp một số tính năng và công cụ để giúp bạn kiểm tra ứng dụng của mình.
- Deployment: NestJS cung cấp một số hướng dẫn và tài nguyên để giúp bạn triển khai ứng dụng của mình.
Dubai's Leading Vinyl Flooring Supplier - Check Us Out!
Tags: webdev
Published: 2023-09-06 07:11:28

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How do large language models assist with document Analysis?
Tags: llm, llms, langchain, documentanalysis
Published: 2023-09-06 06:54:44

**01. [Input Encoding](https://www.optisolbusiness.com/insight/5-key-advantages-of-using-large-language-models-for-document-analysis?utm_source=LLMs&utm_medium=Linkedin&utm_campaign=sam%27s+Visits)**
When you provide a text prompt or query, the input text is first tokenized into smaller units, typically words or subwords. Each token is then converted into a high-dimensional vector representation. These vectors capture semantic information about the words or subwords in the input text.

**02. Model Layers**
The transformer architecture consists of multiple layers of self-attention mechanisms and feedforward neural networks. Each layer processes the input tokens sequentially, refining the model’s understanding of the text.

**03. Stacking Layers**
These layers are typically stacked on top of each other, often 12 to 24 or more layers deep, allowing the model to learn hierarchical representations of the input text. The output of one layer becomes the input to the next, with each layer refining the token representations.

**04. Positional Encoding**
Since the Transformer architecture doesn’t have built-in notions of word order or position, positional encodings are added to the input vectors to provide information about the position of each token in the sequence. This allows the model to understand the sequential nature of language.

**05. Output Generation**
After processing through the stacked layers, the final token representations are used for various tasks depending on the model’s objective. For example, in a text generation task, the model might generate the next word or sequence of words. In a question-answering task, it may output a relevant answer.

**06. Training**
Large language models are trained on massive text corpora using a variant of the Transformer architecture called the “masked language model” or MLM objective. During training, some of the tokens in the input are masked, and the model is trained to predict the masked tokens based on the context provided by the unmasked tokens.

**07. Fine-Tuning**
After pre-training on a large dataset, these models can be fine-tuned on specific tasks or domains with smaller, task-specific datasets to make them more useful for applications.

**08. Inference**
During inference, when you input a query or text prompt, the model uses the learned parameters to generate a response or perform a specific task, such as language translation, text summarization, or answering questions.