Golang學習筆記

****及資料地址

****：
https://www.bilibili.com/video/BV1pJ411H7T9?p=3
源碼文檔：
https://github.com/pingguoxueyuan/gostudy

Golang IDE環境的下載及安裝

方式一：逛網地址
https://Golang.org/dl/
（ps:我無法打開=_=）

方式二：在上面的源碼文檔中的git下載
我直接使用git把所有文檔資料下載了

#當然你應該先安裝git工具，方式請百度一下啦
#注意：文件估計220M，注意你的網絡使用情況
#如果你像我一樣時無限流量，就當我沒說哈哈
#執行以下命令
git clone https://github.com/pingguoxueyuan/gostudy

然后在git目錄下找到 \gostudy\listen1 目錄下有
go1.9.2.windows-amd64.msi
點擊安裝即可

go測試：

#進入cmd模式
win + R 
#輸入go
go
#得到如下結果說明安裝成功
Usage:

        go command [arguments]

The commands are:

        build       compile packages and dependencies
        clean       remove object files
        doc         show documentation for package or symbol
        env         print Go environment information
        bug         start a bug report
        fix         run go tool fix on packages
        fmt         run gofmt on package sources
        generate    generate Go files by processing source
        get         download and install packages and dependencies
        install     compile and install packages and dependencies
        list        list packages
        run         compile and run Go program
        test        test packages
        tool        run specified go tool
        version     print Go version
        vet         run go tool vet on packages

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

Additional help topics:

        c           calling between Go and C
        buildmode   description of build modes
        filetype    file types
        gopath      GOPATH environment variable
        environment environment variables
        importpath  import path syntax
        packages    description of package lists
        testflag    description of testing flags
        testfunc    description of testing functions

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

安裝 VSCodeSetup-x64-1.19.1.exe
點擊安裝，完成后，進行go環境設置：

#查看-->>擴展 -->>搜索 go ,點擊安裝

#添加環境變量，設置項目代碼存放路徑
#我的電腦 --》右鍵屬性 --》高級系統設置 --》環境變量 --》新建用戶變量
#--》設置變量名：GOPATH
#--》設置變量值：自定義項目路徑
#注意一點：變量名不可隨意更改，否則無法無效
#設置完后打開cmd,執行
go env
#結果如下，查看GOPATH是否為相應路徑
#若不成功試試重開cmd
set GOARCH=amd64
set GOBIN=
set GOEXE=.exe
set GOHOSTARCH=amd64
set GOHOSTOS=windows
set GOOS=windows
set GOPATH=G:\GoProjectFile
set GORACE=
set GOROOT=E:\軟件安裝\Go
set GOTOOLDIR=E:\軟件安裝\Go\pkg\tool\windows_amd64
set GCCGO=gccgo
set CC=gcc
set GOGCCFLAGS=-m64 -mthreads -fmessage-length=0
set CXX=g++
set CGO_ENABLED=1
set CGO_CFLAGS=-g -O2
set CGO_CPPFLAGS=
set CGO_CXXFLAGS=-g -O2
set CGO_FFLAGS=-g -O2
set CGO_LDFLAGS=-g -O2
set PKG_CONFIG=pkg-config

目錄文件結構

在項目文件夾下創建如果目錄

/GoproFile/bin
/GoproFile/pkg
/GoproFile/src/hello/hello.go
#在hello.go添加

Installing 10 tools at C:\Users\yk\go\bin
  gocode
  gopkgs
  go-outline
  go-symbols
  guru
  gorename
  godef
  goreturns
  golint
  dlv

Installing github.com/ramya-rao-a/go-outline FAILED
Installing github.com/uudashr/gopkgs/cmd/gopkgs SUCCEEDED

All tools successfully installed. You're ready to Go :).
Installing github.com/nsf/gocode SUCCEEDED
Installing github.com/uudashr/gopkgs/cmd/gopkgs FAILED
Installing github.com/acroca/go-symbols FAILED
Installing golang.org/x/tools/cmd/guru FAILED
Installing github.com/uudashr/gopkgs/cmd/gopkgs SUCCEEDED
Installing golang.org/x/tools/cmd/gorename FAILED
Installing github.com/ramya-rao-a/go-outline FAILED
Installing github.com/ramya-rao-a/go-outline FAILED
Installing github.com/acroca/go-symbols FAILED
Installing github.com/uudashr/gopkgs/cmd/gopkgs SUCCEEDED
Installing golang.org/x/tools/cmd/guru FAILED
Installing github.com/rogpeppe/godef SUCCEEDED
Installing golang.org/x/tools/cmd/gorename FAILED
Installing github.com/acroca/go-symbols FAILED
Installing golang.org/x/tools/cmd/guru FAILED
Installing github.com/ramya-rao-a/go-outline FAILED
Installing golang.org/x/tools/cmd/gorename FAILED
Installing github.com/rogpeppe/godef SUCCEEDED
Installing github.com/acroca/go-symbols FAILED
Installing github.com/rogpeppe/godef SUCCEEDED
Installing golang.org/x/tools/cmd/guru FAILED
Installing github.com/sqs/goreturns FAILED
Installing golang.org/x/tools/cmd/gorename FAILED
Installing github.com/sqs/goreturns FAILED
Installing github.com/sqs/goreturns FAILED
Installing github.com/golang/lint/golint FAILED
Installing github.com/rogpeppe/godef SUCCEEDED
Installing github.com/golang/lint/golint FAILED
Installing github.com/golang/lint/golint FAILED
Installing github.com/sqs/goreturns FAILED

參考博文：
https://blog.csdn.net/Yo_oYgo/article/details/79065966
補充說明：

hello world代碼

package main
import "fmt"
import "time"

func main(){
	fmt.Println("hello world")
	time.Sleep(time.Second*20)
}

#執行編譯：
go build ./src/hello/hello.go
#雖然****上說不要不需要相對路徑的文件名，但是我這里如果不這樣做的話無法編譯成功
#編譯結果：在當前目錄下生成hello.exe文件
#執行：直接寫入文件名即可執行
.\hello.exe
#執行輸出：
hello world

到這里，最簡單的程序就完成啦。
更新時間：2020年4月12日15:20:15