Table Of Content

• Table Of Content
• Start Go on MacOS
• Hello Golang
• Go CMD
• Go Module
• Future Plan
• Learning Resources

Start Go on MacOS

• Install brew install go
• IDE
  • VScode: lightweight choice
    • go: you will install other dependencies
    • go snippets
  • GoLand: standard choice
• Run go run hello.go

Hello Golang

// main.go
package main // required

import "fmt" // required

const text = "Hello Golang" // package-level var

func getText() string {
  text := "hello Golang" // local to getText()
  return text
}

func main() {  // required
  fmt.Println(text)
  fmt.Println(getText())
}

Go CMD

go env         // environment variables
go build       // build to binary
go get         // install packages
go version     // version of go

• GOROOT: includes cmd, standard lib and go compiler
• GOPATH: after 1.11, you don't have to worry about this 👇

Go Module

• Before 1.11, you will always to change GOPATH to your current project folder.
• Now, you can use go mod to map dependencies in GOPATH and don't need to change GOPATH anymore

export GO111MODULE=off   # turn off module system
go mod init essential-go # init module
go list -m all           # list dependencies
go mod tidy              # remove unused 
go get -u                # update all

Future Plan

• New insights will be added to G19_tricks folder
• Chapter 11: Testing
• Chapter 12: Reflection
• Chapter 9: Concurrency with Share Variables
• Chapter 10: Package and Tool
• Go Concurrency Pattern: Pipeline and Cancellation
• Go Concurrency Pattern: Context
• Go Concurrency Pattern: Time out, moving on
• Share memory by communicating

Learning Resources

• Go Examples
• Go Playground
• Go Introduction
• Introcution to OOP in GO
• Go Bible Code Samples