Go Lang 1.13
MacOS Mojave 10.14.6

环境变量

GOROOT

Go Lang 安装目录

GOPATH

Go 命令环境依赖，其中主要目录：

  • bin 可执行相关
  • pkg 编译包相关
  • src 源码包相关

GO111MODULE

GO111MODULE=auto
$GOPATH/src

步骤1：初始化环境

1.创建项目

package main

import (
    "fmt"
)

func main() {
    fmt.Println("Hello, world!")
}

2.初始化模块

# go mod init hello
hellogo.modgo.sum
go.modgo.sum
➜ # go mod tidy      
hello2 imports
	hello/utils: malformed module path "hello/utils": missing dot in first path element 
模块名路径
import (
"hello/utils"

"github.com/astaxie/beego"
)

helloutilsgithub.comastaxie/beego
注意：相同路径下仅能声明一个包

步骤2：配置VSCode

4.安装 VSCode-Go 插件, 添加一下配置:

"go.useLanguageServer": true,
"[go]": {
    "editor.snippetSuggestions": "none",
    "editor.formatOnSave": true,
    "editor.codeActionsOnSave": {
        "source.organizeImports": true,
    }
},
"gopls": {
    "usePlaceholders": true, // add parameter placeholders when completing a function

    // Experimental settings
    "completeUnimported": true, // autocomplete unimported packages
    "deepCompletion": true,     // enable deep completion
}

图书