gistfile1.rs

/*
Everything is in a single crate. The directory structure is as follows:

.
├── b
│   └── mod.rs
├── c
│   └── mod.rs
├── d
│   └── mod.rs
└── main.rs
*/

// -------------------- main.rs

mod b;
mod c;
// mod d goes here
mod d;

fn main() {
	println!("{}", b::foo());
	println!("{}", c::bar());
}

// -------------------- b/mod.rs

use d;

pub fn foo() -> int {
	1 + d::baz()
}

// -------------------- c/mod.rs

// use `use` here, not mod.
use d;

pub fn bar() -> int {
	2 + d::baz()
}

// -------------------- d/mod.rs

pub fn baz() -> int {
	10
}