| // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| trait TraitA { |
| fn method_a(&self) -> isize; |
| } |
| |
| trait TraitB { |
| fn gimme_an_a<A:TraitA>(&self, a: A) -> isize; |
| } |
| |
| impl TraitB for isize { |
| fn gimme_an_a<A:TraitA>(&self, a: A) -> isize { |
| a.method_a() + *self |
| } |
| } |
| |
| fn call_it<B:TraitB>(b: B) -> isize { |
| let y = 4; |
| b.gimme_an_a(y) //~ ERROR `{integer}: TraitA` is not satisfied |
| } |
| |
| fn main() { |
| let x = 3; |
| assert_eq!(call_it(x), 22); |
| } |
