递归编译文件

Question

I just started with Go, and i love it! I have tried to make the structure of my project a bit more manageable, instead of having everything in my main.go

So now i have a structure like this.

src/
-> main.go
-> routes.go
-> handlers/
--> user_handlers.go

But when i try to build this with the following command

go build -v -o ./bin/my_bin ./src/...

I get this error

cannot use -o with multiple packages

But if i make it a flat structure like this

src/
-> main.go
-> routes.go
-> user_handlers.go

It works just fine, all my files got "package main" in the top of them.

What am i doing wrong?

Answer 1

The package name must match the directory name. Moving a source file to a new directory requires that you also change the package name.

foo/foo.go // package foo
foo/bar/bar.go // package bar
foo/bar/qux.go // package bar

The PATH is not relevant in terms of the package name.

Package foo: /some/path/some/where/foo 

This allows multiple "foo" packages to be created and imported provided your import specifies the desired location of "foo"

P.S. The convention for package names is lowercase, no punctuation (e.g., no _'s)