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]
30 lines
877 B
Rust
30 lines
877 B
Rust
// Copyright 2012 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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trait repeat<A> { fn get(&self) -> A; }
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impl<A:Clone + 'static> repeat<A> for Box<A> {
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fn get(&self) -> A {
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(**self).clone()
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}
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}
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fn repeater<A:Clone + 'static>(v: Box<A>) -> Box<repeat<A>> {
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// Note: owned kind is not necessary as A appears in the trait type
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box v as Box<repeat<A>> // No
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}
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pub fn main() {
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let x = 3i;
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let y = repeater(box x);
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assert_eq!(x, y.get());
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}
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