Go — Introduction
What is Go
Go (also called Golang) is a statically typed, compiled programming language designed at Google. It was created by Robert Griesemer, Rob Pike, and Ken Thompson and released in 2009.
Why learn Go
- Simple syntax — easy to read and write
- Fast compilation — compiles to native machine code
- Built-in concurrency — goroutines and channels
- Strong standard library — web servers, HTTP clients, JSON, and more
- Cross-compilation — build for any OS from any OS
- Garbage collection — automatic memory management
Where Go is used
- Cloud infrastructure — Docker, Kubernetes, Terraform
- Web services — REST APIs, microservices
- Command-line tools — CLI applications
- Networking — proxies, load balancers
- DevOps — build tools, deployment scripts
Hello, World
package main
import "fmt"
func main() {
fmt.Println("Hello, World!")
}
Key features
| Feature | Description |
|---|---|
| Static typing | Types are checked at compile time |
| Compiled | Produces a native binary |
| Concurrency | Goroutines and channels for parallelism |
| Garbage collection | Automatic memory management |
| Fast compilation | Compiles in seconds |
| Cross-platform | Build for any target OS |
Go vs other languages
| Feature | Go | Python | Java | C++ |
|---|---|---|---|---|
| Compiled | ✓ | ✗ | ✓ | ✓ |
| Garbage collected | ✓ | ✓ | ✓ | ✗ |
| Concurrency | Built-in | Threading | Threading | Threading |
| Learning curve | Easy | Easy | Medium | Hard |
| Performance | Fast | Slow | Fast | Very fast |
Getting started
Install Go from go.dev:
# Check installation
go version
# Create a new module
go mod init myproject
# Run your program
go run main.go
# Build a binary
go build -o myapp main.go
Go Playground
Try Go in the browser at go.dev/play — no installation required.
Community and resources
- Official docs: go.dev/doc
- Effective Go: go.dev/doc/effective_go
- Go Playground: go.dev/play
- Go Blog: go.dev/blog
Mini Practice
- Install Go and verify with
go version - Create a new module with
go mod init - Write and run a "Hello, World!" program
- Try the Go Playground online
Up Next
In the next lesson, you'll learn about Get Started — setting up your Go development environment.
Related Topics
Frequently Asked Questions about Introduction
What is Introduction in Go?
Introduction is a fundamental concept in Go. This lesson explains it step by step with clear examples, making it easy for beginners to understand.
How do I learn Introduction?
Start by reading the explanation above, then try the code examples. Practice by modifying the examples and experimenting with different values. Hands-on practice is the best way to learn Introduction.
Why is Introduction important in Go?
Introduction is essential for Go development. Understanding this concept will help you write better code and solve real-world problems more effectively.