Consider implementing JoinHandle::try_join

[andreastedile]

Consider the following code using a JoinHandle:

if handle.is_finished() {
    let result = handle.await;
    match result {
        Ok(result) => {}
        Err(error) => {}
    }
}

I think that it would a bit more ergonomic to be able to just do:

match handle.try_join() {
    Some(Ok(result)) => {} // Task has completed successfully
    Some(Err(error)) => {} // Task has completed with error
    None => {} // Task has not completed yet
}

As pointed out on Discord, there is the issue that that handle.await will panic if called after handle.try_join returns not None.

[dd-dreams]

there is the issue that that handle.await will panic if called after handle.try_join returns not None

Though you should call handle.try_join().await. Why would you call handle.await after try_join?