Go中的内部软件包

Question

How to import internals packages in Go ?

import (

    "runtime/internal/atomic"
    "runtime/internal/sys"
)

Like this without get a error:

imports runtime/internal/atomic: use of internal package not allowed

And use internal funcs in a main package ?

Answer 1

Background

Go encourages structuring a program as a collection of packages interacting using exported APIs. However, all packages can be imported. This creates a tension when implementing a library or command: it may grow large enough to structure as multiple packages, but splitting it would export the API used in those additional packages to the world. Being able to create packages with restricted visibility would eliminate this tension.

A rule proposed to Go 1.4

An import of a path containing the element “internal” is disallowed if the importing code is outside the tree rooted at the parent of the “internal” directory.

Short answer

You can't (at least easily) and you shouldn't.