Go Learning notes: Golang profile

This is a creation in Article, where the information may have evolved or changed.

The main features of the Go language

Automatic garbage collection richer built-in type functions multiple return value error handling anonymous function and closure type and interface concurrent programming reflection language interactivity high performance/efficient development

Installation

Installation Instructions Address

Package Download Address

Confirm that the installation is successful

Go version//view versions

environment variable Settings

Overall directory structure

With the package organization, only the package name, called Main, can contain the main function

One program has and only one main package

Importing other non-main packages with the Import keyword

bin/|-mathapppkg/|-platform name |-xxx.asrc/|-Mathapp |-main.go

Helloworld

The package main//declaration file Packageimport {"FMT"//import package, cannot contain unused packages, otherwise the compilation error}func main () {//Ingress function, no parameter no return value FMT. Println ("Hello World")}

Run the $go run Hello.go$go build Hello.go$./hello

Go command

Use the command line to view

Go helpgo build compile Go clean Remove compile build file from current source package Go FMT format code go get dynamic Get Remote code package go install Generate result file and compile results one to $gopath/pkg or $gopath/b Ingo Test run test executable file Go Doc godoc-http=:8080 view document go fix fix previous old version code to new release go version view current version Go ENV view current GO environment variable go list List all currently installed Packagego run to compile and run the Go Language program

Debugging

Debugging with GDB, the inside of the go language has built-in

Listbreakdeletebacktraceinfoprintwhatisnextcontinueset variable

Editor settings

Vim

Other supplements

Comments

Single-ROW/*-----*/Multiline

Import multiple Packages

Import ("FMT" "OS")

Calling the package in the ground function

<packageName>.<Function>