Go入門筆記
Tutorial: Get started with Go
Tutorial: Get started with Go - The Go Programming Language
1. When you need your code to do something that might have been implemented by someone else, you can look for a package that has functions you can use in your code.
Tutorial: Create a Go module
Tutorial: Create a Go module - The Go Programming Language
1. In a module, you collect one or more related packages for a discrete and useful set of functions.