| // 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 connection { |
| fn read(&self) -> isize; |
| } |
| |
| trait connection_factory<C:connection> { |
| fn create(&self) -> C; |
| } |
| |
| type my_connection = (); |
| type my_connection_factory = (); |
| |
| impl connection for () { |
| fn read(&self) -> isize { 43 } |
| } |
| |
| impl connection_factory<my_connection> for my_connection_factory { |
| fn create(&self) -> my_connection { () } |
| } |
| |
| pub fn main() { |
| let factory = (); |
| let connection = factory.create(); |
| let result = connection.read(); |
| assert_eq!(result, 43); |
| } |
