simple_observable 0.3.0+2 simple_observable: ^0.3.0+2 copied to clipboard
Deprecated => Please use `debounce_throttle` instead.
Deprecated #
Please use debounce_throttle instead.
simple_observable #
A debouncer and throttle that works with Future
, Stream
, and callbacks.
Class | Purpose |
---|---|
Debouncer |
Wait for changes to stop before notifying. |
Throttle |
Notifies once per Duration for a value that keeps changing. |
SimpleObservable |
Base class for observing value changes. |
Usage #
final debouncer = Debouncer<String>(Duration(milliseconds: 200));
// Run a search whenever the user pauses while typing.
textEditingController.addListener(() => debouncer.value = textEditingController.text);
debouncer.values.listen((search) => submitSearch(search));
// Wait for a fidgety button to settle.
oldButton.onPressed(debouncer.setValue);
debouncer.nextValue.then(buttonPressed);
final throttle = Throttle<double>(Duration(milliseconds: 100));
// Limit being notified of continuous sensor data.
sensor.addListener(throttle.setValue);
throttle.values.listen((data) => print('$data'));