1 // Copyright 2012-2014 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.
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.
14 fn plus(&self) -> int;
19 impl plus for uint { fn plus(&self) -> int { *self as int + 20 } }
24 impl plus for String { fn plus(&self) -> int { 200 } }
28 fn str(&self) -> String;
29 fn multi<F>(&self, f: F) where F: FnMut(uint);
32 impl uint_utils for uint {
33 fn str(&self) -> String {
36 fn multi<F>(&self, mut f: F) where F: FnMut(uint) {
38 while c < *self { f(c); c += 1_usize; }
43 fn length_(&self, ) -> uint;
44 fn iter_<F>(&self, f: F) where F: FnMut(&T);
45 fn map_<U, F>(&self, f: F) -> Vec<U> where F: FnMut(&T) -> U;
48 impl<T> vec_utils<T> for Vec<T> {
49 fn length_(&self) -> uint { self.len() }
50 fn iter_<F>(&self, mut f: F) where F: FnMut(&T) { for x in self { f(x); } }
51 fn map_<U, F>(&self, mut f: F) -> Vec<U> where F: FnMut(&T) -> U {
52 let mut r = Vec::new();
61 assert_eq!(10_usize.plus(), 30);
62 assert_eq!(("hi".to_string()).plus(), 200);
64 assert_eq!((vec!(1)).length_().str(), "1".to_string());
65 let vect = vec!(3, 4).map_(|a| *a + 4);
66 assert_eq!(vect[0], 7);
67 let vect = (vec!(3, 4)).map_::<uint, _>(|a| *a as uint + 4_usize);
68 assert_eq!(vect[0], 7_usize);
70 10_usize.multi(|_n| x += 2_usize );
71 assert_eq!(x, 20_usize);