1 // Copyright 2012-2013 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.
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.
13 The `ToStr` trait for converting to strings
19 /// A generic trait for converting a value to a string
21 /// Converts the value of `self` to an owned string
22 fn to_str(&self) -> ~str;
25 /// Trait for converting a type to a string, consuming it in the process.
27 /// Consume and convert to a string.
28 fn into_str(self) -> ~str;
31 impl<T: fmt::Show> ToStr for T {
32 fn to_str(&self) -> ~str { format!("{}", *self) }
40 fn test_simple_types() {
41 assert_eq!(1i.to_str(), ~"1");
42 assert_eq!((-1i).to_str(), ~"-1");
43 assert_eq!(200u.to_str(), ~"200");
44 assert_eq!(2u8.to_str(), ~"2");
45 assert_eq!(true.to_str(), ~"true");
46 assert_eq!(false.to_str(), ~"false");
47 assert_eq!(().to_str(), ~"()");
48 assert_eq!((~"hi").to_str(), ~"hi");
54 assert_eq!(x.to_str(), ~"[]");
55 assert_eq!((~[1]).to_str(), ~"[1]");
56 assert_eq!((~[1, 2, 3]).to_str(), ~"[1, 2, 3]");
57 assert!((~[~[], ~[1], ~[1, 1]]).to_str() ==
58 ~"[[], [1], [1, 1]]");