001 Go Language Mac system development environment construction

The Go language is a fast, static type of development language. Its main features include automatic garbage collection, concurrent programming, reflection, and so on.

Website

https://golang.org/

Download

Open https://golang.org/dl/ to view installation files and source code for Windows, Linux, MacOS systems. Click Apple macOS to download the corresponding installation file.

Image

Double-click go1.9.2.darwin-amd64.pkg the download to follow the prompts step-by-step installation. Open terminal to run after installation go version , display results

go version go1.9.2 darwin/amd64

Set working directory Gopath

Open the. BASHRC

$ vi ~/.bashrc

Add the following code:

export GOPATH="$HOME/go"export PATH="$PATH:$GOPATH/bin"

After adding the code, press ESC, enter: Wq, save the corresponding changes, run source ~/.bashrc , you can make the configuration take effect.

Open terminal to view Gopath,

$ $GOPATH# 运行结果-bash: /Users/fujinliang/go: is a directory

HelloWorld

Create a HelloWorld project directory and file

$ cd $GOPATH# bin存放编译后的可执行文件 pkg存放编译后的包文件 src存放项目源文件$ mkdir {src,bin,pkg}$ cd src$ mkdir -p fujinliang.top/go-study$ cd fujinliang.top/go-study$ mkdir 001-helloworld$ cd 001-helloworld$ vi helloworld.go

The Helloworld.go code is as follows:

package mainimport "fmt"func main() {    fmt.Println("Hello, 世界")}

Run Helloworld.go

$ go run helloworld.go# 运行结果Hello, 世界

Go common commands

# 查看go的版本信息$ go versiongo version go1.9.2 darwin/amd64# 用于编译我们指定的源码文件或代码包以及它们的依赖包$ go build helloworld.go$ ./helloworldHello, 世界# 编译并运行 go 文件$ go run helloworld.goHello, 世界

Run the Go Code online

https://play.golang.org/

Follow the public number

Follow the public number