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13 lines
266 B
Rust
13 lines
266 B
Rust
pub struct Defer<F: FnOnce() -> T, T>(Option<F>);
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impl<F: FnOnce() -> T, T> Defer<F, T> {
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pub fn new(f: F) -> Self { Defer(Some(f)) }
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}
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impl<F: FnOnce() -> T, T> Drop for Defer<F, T> {
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fn drop(&mut self) {
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if let Some(f) = self.0.take() {
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_ = f();
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}
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}
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}
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