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20 lines
441 B
Rust
20 lines
441 B
Rust
use smol::future::FutureExt;
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use std::{future::Future, time::Duration};
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pub fn post_inc(value: &mut usize) -> usize {
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let prev = *value;
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*value += 1;
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prev
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}
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pub async fn timeout<F, T>(timeout: Duration, f: F) -> Result<T, ()>
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where
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F: Future<Output = T>,
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{
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let timer = async {
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smol::Timer::after(timeout).await;
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Err(())
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};
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let future = async move { Ok(f.await) };
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timer.race(future).await
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}
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