43 lines
1.1 KiB
Rust
43 lines
1.1 KiB
Rust
// Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// ignore-fast
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use std::vec_ng::Vec;
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trait to_str {
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fn to_string(&self) -> ~str;
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}
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impl to_str for int {
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fn to_string(&self) -> ~str { self.to_str() }
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}
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impl<T:to_str> to_str for Vec<T> {
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fn to_string(&self) -> ~str {
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format!("[{}]", self.iter().map(|e| e.to_string()).to_owned_vec().connect(", "))
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}
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}
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pub fn main() {
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assert!(1.to_string() == ~"1");
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assert!((vec!(2, 3, 4)).to_string() == ~"[2, 3, 4]");
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fn indirect<T:to_str>(x: T) -> ~str {
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x.to_string() + "!"
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}
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assert!(indirect(vec!(10, 20)) == ~"[10, 20]!");
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fn indirect2<T:to_str>(x: T) -> ~str {
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indirect(x)
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}
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assert!(indirect2(vec!(1)) == ~"[1]!");
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}
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