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1️⃣ TypeScript Syntax vs. JavaScript Syntax TypeScript extends JavaScript, meaning you can write regular JavaScript code and add extra TypeScript features. ✔ JavaScript Code (Valid in TypeScript) let message = “Hello, World!”;console.log(message); ✔ TypeScript Code with Type Annotations let message: string = “Hello, World!”;console.log(message); 👉 Key difference: The : string specifies that message must always … Read more
1️⃣ Create a New TypeScript File First, you need a TypeScript file (.ts). If you haven’t already set up TypeScript, check out our TypeScript Installation and Setup Guide. 🔹 Step 1: Create a Project Folder (If Not Done Already) If you don’t have a project folder yet, create one: mkdir my-typescript-projectcd my-typescript-project 🔹 Step 2: … Read more
1️⃣ Install Node.js and npm (Prerequisite) TypeScript runs on Node.js, so you need to install Node.js and npm (Node Package Manager) first. 🔹 Step 1: Check if Node.js is installed Open the terminal or command prompt and run: node -v If you see a version number, Node.js is already installed. If not, download and install … Read more
1️⃣ Static Typing – Avoid Common Errors One of the biggest advantages of TypeScript is static typing. Unlike JavaScript, where variables can hold any type of value, TypeScript allows you to define types. This helps in catching errors during development, not at runtime. Example: let age: number = 25; // ✅ Correctage = “twenty-five”; // … Read more
Node.js is widely used to create high-performance, scalable servers for web applications, APIs and real-time systems. Its non-blocking, event-driven architecture makes it an excellent choice for building efficient servers. What Is a Node.js Server? A Node.js server is an application built using Node.js to handle incoming client requests and send appropriate responses. It leverages the … Read more
Node.js is a powerful and popular runtime environment for running JavaScript on the server side. While it isn’t a “compiler” in the traditional sense, understanding how Node.js executes JavaScript code, its relation to the V8 engine, and its role in server-side development is essential for building scalable and efficient applications. What Is a Compiler? A … Read more
Raspberry Pi offers a wide variety of built-in modules that simplify programming and interacting with hardware components. These modules enable you to control GPIO pins, handle files and perform networking tasks, all while writing Python code. What Are Built-in Modules? Built-in modules are libraries and tools that come pre-installed with the Raspberry Pi OS. These … Read more
Raspberry Pi is a small and affordable computer that you can use for a wide range of projects, from robotics to home automation and IoT. One of the key strengths of the Raspberry Pi is its ability to interact with various components and sensors through its General-Purpose Input/Output (GPIO) pins. 1. Raspberry Pi Board The … Read more
What Is an RGB LED? An RGB LED is a type of LED that can produce various colors by combining red, green, and blue light. Each of the three colors can be adjusted from 0 to 255 (using PWM), creating millions of color combinations. Prerequisites Before starting the project, ensure you have the following components: … Read more
WebSockets are a powerful tool for creating real-time communication between a server and a client. In this guide, we will walk through setting up a WebSocket server on your Raspberry Pi and connecting it to a web client for interactive, real-time communication. Whether you’re building a live chat application, controlling hardware remotely, or implementing real-time … Read more