Demonstration of rust modules in files

gistfile1.rs

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

use a::b;

mod a;
mod c;

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

//-------------- a/mod.rs ---------------------

pub mod b;
pub static foo: int = 40;

//-------- a/b.rs (or a/b/mod.rs) -------------

pub static bar: f64 = 1.1;

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

// no need to use mod
use a::b;

pub fn foobar() {
  println!("{}", b::bar);
}