使用main.go在其他程序包中声明的结构

Question

I have a structure declared in main.go as shown below:

type Organization struct {
    ID    string `json:"id"`
    Count int    `json:"count"` //node count
}

I have a package named configuration and have a function like this:

func foo(org main.Organization) {

}

The issue is I am not able to access main.Organization. Is there any way to access struct declared in main.go in another package?

Answer 1

It's not possible to import package main except in certain rare circumstances.

I found this explanation on a mailing list dated back last year.

However importing a main package in another main package works. To summarize:

1) importing a main package in a external test is supported
2) importing a main package in a main package is supported
3) importing a main package in a non main package is not supported

This seems reasonable to me, however AFAIK it is not documented.

From the language spec

A complete program is created by linking a single, unimported package called the main package with all the packages it imports, transitively. The main package must have package name main and declare a function main that takes no arguments and returns no value.

(emphasis mine in both quotes)