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16 lines
264 B
Rust
16 lines
264 B
Rust
// run-pass
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fn takes_two(x: &isize, y: &isize) -> isize { *x + *y }
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fn with<T, F>(f: F) -> T where F: FnOnce(&isize) -> T {
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f(&20)
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}
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fn has_one<'a>(x: &'a isize) -> isize {
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with(|y| takes_two(x, y))
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}
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pub fn main() {
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assert_eq!(has_one(&2), 22);
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}
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