Golang Beginner's Guide to Questions: Getting Started is Easily Solved

Go Beginner’s Question Guide

Introduction

For newbies to Go, it is possible to get started You will encounter some common problems. This article will answer these questions and help you get started.

FAQ

1. How to install Go?

go get golang.org/dl/goX.YY.ZZ.darwin-amd64.pkg # Mac
go get golang.org/dl/goX.YY.ZZ.linux-amd64.tar.gz # Linux

2. How to create a Go project?

go mod init example.com/myproject

3. How to run Go program?

go run main.go

4. How to compile Go program?

go build main.go

5. What are the features of Go language?

• Compiled Language
• Concurrent Programming
• Garbage Collector
• Built-in Types, Packages and Libraries

6. What are packages in Go?

Packages are used to organize and manage Go code. They contain related source files, documentation and tests.

7. What are interfaces in Go?

An interface defines a set of methods without implementing them. It allows different types to implement the same interface.

8. How to handle errors in Go?

Handle errors using the error type and the errors.Is() and errors.As() functions.

9. How to use Goroutine?

Goroutine is a lightweight thread in Go.

go func() {
   // Goroutine 代码
}()

10. How to use Channel?

Channels are used for concurrent programming in Go for data exchange.

ch := make(chan int)
ch <- 10

Practical case

Build a Web server

package main

import (
   "fmt"
   "net/http"
)

func helloHandler(w http.ResponseWriter, r *http.Request) {
   fmt.Fprintf(w, "Hello, world!")
}

func main() {
   mux := http.NewServeMux()
   mux.HandleFunc("/", helloHandler)
   http.ListenAndServe(":8080", mux)
}

Run this code and access it in your browserlocalhost:8080. It will print "Hello, world!".

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