An example to explain how to use go module.

pay attention to 2 points:

1. How to import own source package

import own package with module as prefix.

example:

• wrong:

import (
	"fmt"
	"./config"
)

• correct:

import (
	"fmt"
	"github.com/shinvdu/go_module_poc/config"
)

<github.com/shinvdu/go_module_poc> is the module name, also it can be a string without github.com as prefix.

this is specified by go mod init

$: go mod init github.com/shinvdu/go_module_poc

2. A folder is a package, and it can have several files in it with same package name

in this example, a package config have two file

config/
├── bao.go
└── config.go

after I imported as below

import (
	"fmt"
	"github.com/shinvdu/go_module_poc/config"
)

I can call both defined struct in two file.

like

a := config.GetConfig()
c := config.GetDaoConfig()
var b config.DaoConfig
b.Username = "BCD"