GO Tutorial

🚀 Introduction to Go (Golang)

Go, often referred to as Golang, is a statically typed, compiled programming language designed by Google. It’s known for its simplicity, performance, and powerful concurrency support, making it ideal for building fast and scalable applications.

🎯 Why Learn Go?

• 🚀 Fast Performance: Compiled directly to machine code
• 🔄 Built-in Concurrency: Go routines make multithreading easy
• 📦 Simple Syntax: Easy to learn, write, and read
• 📁 Standard Library: Rich library with everything from HTTP to file handling
• ☁️ Cloud Native: Used in Kubernetes, Docker, Terraform, and more

💻 Basic Go Syntax

package main

import "fmt"

func main() {
  fmt.Println("Hello, Go!")
}
  

This is the classic "Hello, World!" program in Go. Let’s break it down:

• package main – Defines the package as executable
• import "fmt" – Imports the formatting library
• func main() – The entry point of the Go program
• fmt.Println() – Prints output to the console

🧠 Key Go Features

• Static Typing: Variables have a fixed type
• Garbage Collection: Automatic memory management
• Cross Compilation: Easily build apps for multiple platforms
• Error Handling: Simple and clear error handling without exceptions
• No Classes: Uses structs and interfaces for OOP-like behavior

📂 How to Run Go Code

1. Install Go from go.dev/dl
2. Create a file: main.go
3. Write the code above into it
4. Run with: go run main.go

📘 What You'll Learn Next

• Variables and Data Types
• Functions
• Control Structures (if, for, switch)
• Structs and Interfaces
• Concurrency (Goroutines and Channels)