Expand description
§Timed Queue
A queue that drops its content after a given amount of time.
§Crate Features
vecdeque
- Uses aVecDeque
as the underlying data structure. Enabled by default.doublestack
- Uses two stacks (Vec
) as the underlying data structure. Mutually exclusive withvecdeque
.tokio
- Uses [tokio::time::Instant
] instead ofstd::time::Instant
.
§Example
To implement an FPS counter, you could use the following technique:
let mut fps_counter = TtlQueue::new(Duration::from_secs_f64(1.0));
for i in 0..=50 {
// Register a new frame and return the number of frames observed
// within the last second.
let fps = fps_counter.refresh_and_push_back(());
debug_assert!(fps >= 1);
// Sleep ~20 ms to achieve a ~50 Hz frequency.
thread::sleep(Duration::from_millis(19));
}
let fps = fps_counter.refresh();
debug_assert!(fps >= 45 && fps <= 55);
let delta = fps_counter.avg_delta();
debug_assert!(delta >= Duration::from_millis(19) && delta <= Duration::from_millis(21));
Structs§
- TtlQueue
- A queue that drops its content after a given amount of time.