pub fn poll_once<T, F>(f: F) -> PollOnce<F> ⓘ
Expand description
Polls a future just once and returns an Option
with the result.
§Examples
use futures_lite::future;
assert_eq!(future::poll_once(future::pending::<()>()).await, None);
assert_eq!(future::poll_once(future::ready(42)).await, Some(42));
examples/async_tasks/async_compute.rs (
line 117)
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fn handle_tasks(mut commands: Commands, mut transform_tasks: Query<&mut ComputeTransform>) {
for mut task in &mut transform_tasks {
if let Some(mut commands_queue) = block_on(future::poll_once(&mut task.0)) {
commands.append(&mut commands_queue);
}
}
}