gistfile1.rs

trait Drawable { fn draw(&self); }
trait Printable { fn print(&self); }

impl Circle: Drawable { fn draw(&self) { ... } }
impl Circle: Printable { fn print(&self) { ... } }
                                                // both traits - Printable and Drawable is
                                                // implemented for `Circle`

fn draw_all(shapes: &[@(Drawable+Printable)]) { // invalid syntax in Rust
                                                // suppose we need to accept array of object that both
                                                // printable and drowable, for example, 
                                                // to print something to
                                                // log if anything goes wrong
    for shapes.each |shape| { shape.draw(); }
}

let x: @Circle = @new_circle();

draw_all([x as (Drawable + Printable)]);        // invalid syntx
                                                // also, loocks very wired, by this is
                                                // what i'm looking for