src/test/run-pass/generic-static-methods.rs

   1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11
  12 trait vec_utils<T> {
  13     fn map_<U, F>(x: &Self, f: F) -> Vec<U> where F: FnMut(&T) -> U;
  14 }
  15
  16 impl<T> vec_utils<T> for Vec<T> {
  17     fn map_<U, F>(x: &Vec<T> , mut f: F) -> Vec<U> where F: FnMut(&T) -> U {
  18         let mut r = Vec::new();
  19         for elt in x.iter() {
  20             r.push(f(elt));
  21         }
  22         r
  23     }
  24 }
  25
  26 pub fn main() {
  27     assert_eq!(vec_utils::map_(&vec!(1i,2i,3i), |&x| x+1), vec!(2i,3i,4i));
  28 }