mirror of https://github.com/rust-lang/rust
20 lines
336 B
Rust
20 lines
336 B
Rust
//@ run-pass
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#![allow(unused_parens)]
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fn region_identity(x: &usize) -> &usize { x }
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fn apply<T, F>(t: T, f: F) -> T where F: FnOnce(T) -> T { f(t) }
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fn parameterized(x: &usize) -> usize {
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let z = apply(x, ({|y|
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region_identity(y)
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}));
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*z
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}
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pub fn main() {
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let x = 3;
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assert_eq!(parameterized(&x), 3);
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}
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