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?
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 theerror
type and theerrors.Is()
anderrors.As()
functions.
9. How to useGoroutine
?
Goroutine is a lightweight thread in Go.
go func() { // Goroutine 代码 }()
10. How to useChannel
?
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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