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14 lines
257 B
Rust
14 lines
257 B
Rust
//@ run-pass
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fn swap<F>(f: F) -> Vec<isize> where F: FnOnce(Vec<isize>) -> Vec<isize> {
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let x = vec![1, 2, 3];
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f(x)
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}
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pub fn main() {
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let v = swap(|mut x| { x.push(4); x });
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let w = swap(|mut x| { x.push(4); x });
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assert_eq!(v, w);
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}
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