9e3d0b002a
This breaks a fair amount of code. The typical patterns are:
* `for _ in range(0, 10)`: change to `for _ in range(0u, 10)`;
* `println!("{}", 3)`: change to `println!("{}", 3i)`;
* `[1, 2, 3].len()`: change to `[1i, 2, 3].len()`.
RFC #30. Closes #6023.
[breaking-change]
64 lines
1.9 KiB
Rust
64 lines
1.9 KiB
Rust
// Copyright 2012-2013 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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/*!
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The `ToStr` trait for converting to strings
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*/
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use fmt;
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use string::String;
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/// A generic trait for converting a value to a string
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pub trait ToStr {
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/// Converts the value of `self` to an owned string
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fn to_str(&self) -> String;
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}
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/// Trait for converting a type to a string, consuming it in the process.
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pub trait IntoStr {
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/// Consume and convert to a string.
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fn into_str(self) -> String;
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}
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impl<T: fmt::Show> ToStr for T {
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fn to_str(&self) -> String {
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format!("{}", *self)
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}
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}
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#[cfg(test)]
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mod tests {
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use prelude::*;
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use super::*;
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#[test]
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fn test_simple_types() {
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assert_eq!(1i.to_str(), "1".to_string());
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assert_eq!((-1i).to_str(), "-1".to_string());
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assert_eq!(200u.to_str(), "200".to_string());
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assert_eq!(2u8.to_str(), "2".to_string());
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assert_eq!(true.to_str(), "true".to_string());
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assert_eq!(false.to_str(), "false".to_string());
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assert_eq!(().to_str(), "()".to_string());
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assert_eq!(("hi".to_string()).to_str(), "hi".to_string());
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}
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#[test]
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fn test_vectors() {
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let x: Vec<int> = vec![];
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assert_eq!(x.to_str(), "[]".to_string());
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assert_eq!((vec![1i]).to_str(), "[1]".to_string());
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assert_eq!((vec![1i, 2, 3]).to_str(), "[1, 2, 3]".to_string());
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assert!((vec![vec![], vec![1i], vec![1i, 1]]).to_str() ==
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"[[], [1], [1, 1]]".to_string());
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}
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}
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