19 lines
291 B
Rust
19 lines
291 B
Rust
// Test that `&T` and `&mut T` implement `Deref<T>`
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use std::ops::Deref;
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fn deref<U:Copy,T:Deref<Target=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: isize = 3;
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let y = deref(&x);
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assert_eq!(y, 3);
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let mut x: isize = 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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