Let’s Go Hello World !

TutorialGo

Let’s Go Hello World !

golang — HelloWorld!

### Incentitive

Golang has many characteristic , i will show it under.

  • Similiar C language
  • Syntax Simple
  • High performance

Env (MacOS)

Install Homebrew

Open your terminal and enter it .

$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"#### Install Golang(1.11.2)

$ brew update && brew upgrade $ brew install go #### Add usr/local/go/bin to PATH Env

$ export PATH=$PATH:/usr/local/go/bin

You can use Go version command

$ go version $ go env #### Go Env

GOARCH=“amd64” GOBIN="" GOCACHE=“/Users/cuzo/Library/Caches/go-build” GOEXE="" GOFLAGS="" GOHOSTARCH=“amd64” GOHOSTOS=“darwin” GOOS=“darwin” GOPATH=“/Users/deweixu/coding/Go/go_path” GOPROXY="" GORACE="" GOROOT=“/usr/local/opt/go/libexec” GOTMPDIR="" GOTOOLDIR=“/usr/local/opt/go/libexec/pkg/tool/darwin_amd64” GCCGO=“gccgo” CC=“clang” CXX=“clang++” CGO_ENABLED=“1” GOMOD="" CGO_CFLAGS=“-g -O2” CGO_CPPFLAGS="" CGO_CXXFLAGS=“-g -O2” CGO_FFLAGS=“-g -O2” CGO_LDFLAGS=“-g -O2”= PKG_CONFIG=“pkg-config” GOGCCFLAGS=“-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/lv/7lxtn1dd75d5kbjmn50ghd080000gn/T/go-build138926056=/tmp/go-build -gno-record-gcc-switches -fno-common”### Hello World !

Create a file hello-world.go

package main import “fmt”func main() { fmt.Println(“Hello world!”) }Open your terminal and enter it .

$ go run hello-world.goHello World!### Conclusion

Golang is very popular in backends recently , and it have a title “High performance” .

So I will learn “Golang”and share my experience .

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