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ما هو حقن التبعيات (Dependency Injection)؟
يمكن تعديل أو استبدال أي تبعية دون تغيير الكائن الرئيسي، مما يجعل الكود أسهل في التطوير على المدى الطويل.
توجد ثلاث طرق رئيسية لحقن التبعيات:
How to Stop SSH From Timing Out
This makes the server send a keep-alive packet every 60 seconds, allowing up to 3 missed replies before disconnecting.
Restart SSH:
How to Translate URLs in React (2025 Guide)
Install necessary dependencies:
npm install react-router-dom i18next react-i18next i18next-browser-languagedetectorGlobalization in React (2025 Trends & Best Practices)
const today = new Intl.DateTimeFormat(i18n.language).format(new Date());new Intl.NumberFormat('en-US', {
style: 'currency',
currency: 'USD'
}).format(4999.99);
// Output: $4,999.99Implementing Internationalization (i18n) in a Large React Application (2025 Guide)
In large apps, structure your translation files modularly:
/locales
/en
home.json
dashboard.json
/fr
home.json
dashboard.jsonBuilding Micro-Frontends with Webpack Module Federation (2025 Guide)
import('./App');Update src/App.js:
State Management Beyond Redux: Using Zustand for Scalable React Apps
Zustand is a small, fast, and scalable state management solution for React applications. Developed by the creators of Jotai and React-spring, Zustand aims to provide a minimalistic API based on hooks, eliminating the need for boilerplate code and context providers.
Key Features:
Mastering React Rendering Performance with Memoization and Context
This approach ensures that the expensive computation runs only when data changes, improving performance.
The Context API allows for sharing state across components without prop drilling. However, improper use can lead to performance issues, as any change in context value triggers re-renders in all consuming components.([Medium][6], [GeeksforGeeks][2])
How to Disable MySQL Password Validation on Ubuntu 25.04
Now that validation is disabled, try creating a user with a weak password:
CREATE USER 'devuser'@'localhost' IDENTIFIED BY '123';
GRANT ALL PRIVILEGES ON *.* TO 'devuser'@'localhost';
FLUSH PRIVILEGES;How to Move the MySQL Data Directory to a New Location on Ubuntu 25.04
Find the line:
datadir = /var/lib/mysqlHow to Install PHP, MySQL, and phpMyAdmin on Ubuntu 25.04 (LAMP Stack Setup Guide)
Enable the mbstring PHP extension and restart Apache:
sudo phpenmod mbstring
sudo systemctl restart apache2How to Fix NVIDIA Driver Issues on Ubuntu (Dell Vostro 3521)
Run:
sudo ubuntu-drivers devicesAvoiding Memory Leaks in C++ Without Smart Pointers
void legacyFunction(char* data);
void useLegacyAPI() {
ScopedArray<char> buffer(new char[512]);
legacyFunction(buffer.get());
}Even without smart pointers, you can manage memory safely in C++ using the RAII pattern. This approach:
Deep Copy in C++: How to Avoid Shallow Copy Pitfalls
In C++, copying objects can lead to serious bugs if you're dealing with raw pointers. By default, C++ uses shallow copy, which means only the pointer's value is copied—not the data it points to.
This tutorial covers:
Protect Your Forms Like a Pro: Anti-Spam Techniques That Actually Work
Why it works: Bots usually fill every field, including hidden ones. Real users never see it.
Most humans take a few seconds to fill a form. Bots fill and submit instantly.
Build a Custom Rate Limiter in Node.js with Redis
Instead of IP address, use API keys for user-specific limits:
const userKey = req.headers['x-api-key'] || req.ip;
const key = `rate_limit:${userKey}`;Arduino Basics: A Step-by-Step Tutorial
- Definition: Represent two states: HIGH (ON) and LOW (OFF).
- Usage: Turning LEDs on/off, reading button states.
- Definition: Varying signals that can represent a range of values.
- Usage: Reading sensor data (e.g., temperature, light intensity).
Building a Real-Time Object Detection Web App with TensorFlow.js and p5.js
Before you begin, make sure you have the following installed and set up:
- A modern web browser that supports webcam access (Chrome, Firefox, or Edge).
- Basic knowledge of HTML, CSS, and JavaScript.
- Familiarity with p5.js (optional, but helpful).
- A code editor (Visual Studio Code, Sublime Text, etc.).
Building a Cross-Platform Desktop App with Tauri and Svelte: A Step-by-Step Tutorial
Tauri leverages web technologies to build native desktop applications while offloading critical operations to Rust. Paired with Svelte—a fast, compile-time JavaScript framework—you can create modern apps that are both visually appealing and highly performant. This tutorial will walk you through setting up your development environment, creating a Svelte project, integrating Tauri, and building your first desktop app.
Before diving in, ensure you have the following installed:
Implementing a Domain-Specific Language (DSL) with LLVM and C++
- Lexing & Parsing: Tokenizing input and building an AST using recursive-descent parsing.
- AST & Code Generation: Creating an AST that maps directly to LLVM IR, enabling advanced optimizations.
- Optimization & Execution: Leveraging LLVM’s optimization passes and setting the stage for JIT compilation.
- Enhance the DSL: Add support for variables, functions, and control flow constructs.
- Improve Error Handling: Develop a robust error recovery strategy in your parser.
- Integrate JIT Execution: Use LLVM’s ORC JIT to compile and run your DSL expressions dynamically.
- Experiment with Optimizations: Explore custom optimization passes and advanced LLVM features available in 2025.