26 lines
724 B
Rust
26 lines
724 B
Rust
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// Copyright 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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// Test that `&T` and `&mut T` implement `Deref<T>`
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fn deref<U:Copy,T:Deref<U>>(t: T) -> U {
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*t
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}
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fn main() {
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let x: int = 3;
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let y = deref(&x);
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assert_eq!(y, 3);
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let mut x: int = 4;
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let y = deref(&mut x);
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assert_eq!(y, 4);
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}
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