debounce_throttle 1.0.0

An observer, debouncer, and throttle that works with Futures, Streams, and callbacks.

debounce_throttle

An observable, 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.
Observable	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'));