Golang/Basics

Main function

package main
import (
	"fmt"
	"time"
)

func main()         {
	fmt.Println("Welcome", time.Now())
}

Go modules

A Go Module is nothing but a collection of Go packages. Why do we need Go modules to create a custom package? The answer is the import path for the custom package we create is derived from the name of the go module. In addition to this, all the other third-party packages(such as source code from github) which our application uses will be present in the go.mod file along with the version. This go.mod file is created when we create a new module.

# we are in mymodule/ directory
go mod init mymodule # create 'go.mod' file

# cat go.mod
module mymodule

go 1.17

The mymodule is the base path to import any package created inside this module.