1 基础知识

1.1 简介

• Go是一种开放源代码编程语言
• Go可轻松构建简单、可靠且高效的软件

1.2 Go语言的特点

• Go富有表现力、简介、整洁且高效
• Go的并发机制使编写程序可轻松地从多核和联网的机器中获得最大收益
• Go的新颖类型系统可构建灵活的模块化程序
• Go可以快速编译成机器码且具有便利的垃圾回收和运行时反射功能
• Go是一种快熟、静态类型的编程语言，但有动态类型解析语言的效果

2 最佳实践

2.1 环境准备

2.1.1 部署系统环境

OS = CentOS 8.x x86_64
Host Name = any
IP Address = any

2.1.2 下载安装包

cd ~
wget https://dl.google.com/go/go1.14.4.linux-amd64.tar.gz

其他版本请从以下页面下载，
https://golang.org/dl/

2.2 部署软件包

2.2.1 部署软件包到目录

cd ~
tar -C /usr/local/ -xf go1.14.4.linux-amd64.tar.gz

2.2.2 配置环境变量

vim /etc/profile.d/golan.sh

输入如下配置，

export GOLAN_HOME=/usr/local/go
export PATH=${GOLAN_HOME}/bin:$PATH

另外，如果想快速配置，可使用如下命令，

echo 'export GOLAN_HOME=/usr/local/go' > /etc/profile.d/golan.sh
echo 'export PATH=${GOLAN_HOME}/bin:$PATH' >> /etc/profile.d/golan.sh

配置完成后，可使用如下命令导入环境变量，

source /etc/profile

配置完成后，建议使用如下命令确认环境变量生效，

go version

可见如下输出，

go version go1.14.4 linux/amd64

2.2.3 获取命令行帮助

go help

可见如下显示，

Go is a tool for managing Go source code.

Usage:

        go  [arguments]

The commands are:

        bug         start a bug report
        build       compile packages and dependencies
        clean       remove object files and cached files
        doc         show documentation for package or symbol
        env         print Go environment information
        fix         update packages to use new APIs
        fmt         gofmt (reformat) package sources
        generate    generate Go files by processing source
        get         add dependencies to current module and install them
        install     compile and install packages and dependencies
        list        list packages or modules
        mod         module maintenance
        run         compile and run Go program
        test        test packages
        tool        run specified go tool
        version     print Go version
        vet         report likely mistakes in packages

Use "go help " for more information about a command.

Additional help topics:

        buildmode   build modes
        c           calling between Go and C
        cache       build and test caching
        environment environment variables
        filetype    file types
        go.mod      the go.mod file
        gopath      GOPATH environment variable
        gopath-get  legacy GOPATH go get
        goproxy     module proxy protocol
        importpath  import path syntax
        modules     modules, module versions, and more
        module-get  module-aware go get
        module-auth module authentication using go.sum
        module-private module configuration for non-public modules
        packages    package lists and patterns
        testflag    testing flags
        testfunc    testing functions

Use "go help " for more information about that topic.

2.3 尝试编译代码

2.3.1 创建代码

cd ~/
vim hello.go

加入如下代码，

package main

import "fmt"

func main() {
	fmt.Printf("hello, world\n")
}

2.3.2 编译代码

cd ~/
go build hello.go

2.3.3 测试运行

cd ~/
./hello

可见如下显示，

hello, world

参阅文档
===================

GO的安装包下载
—————
https://golang.org/dl/

安装方法
—————
https://golang.org/doc/install

官方首页
—————
https://golang.org/

动态语言与静态语言的区别
——————-
https://www.jianshu.com/p/355494d8bd08