buffertoggle.md

bufferToggle

signature: bufferToggle(openings: Observable, closingSelector: Function): Observable

Toggle on to catch emitted values from source, toggle off to emit buffered values as array.

Examples

Example 1: Toggle buffer on and off at interval

( jsBin | jsFiddle )

//emit value every second
const sourceInterval = Rx.Observable.interval(1000);
//start first buffer after 5s, and every 5s after
const startInterval = Rx.Observable.interval(5000);
//emit value after 3s, closing corresponding buffer
const closingInterval = val => {
	console.log(`Value ${val} emitted, starting buffer! Closing in 3s!`)
	return Rx.Observable.interval(3000);
}
//every 5s a new buffer will start, collecting emitted values for 3s then emitting buffered values
const bufferToggleInterval = sourceInterval.bufferToggle(startInterval, closingInterval);
//log to console
//ex. emitted buffers [4,5,6]...[9,10,11]
const subscribe = bufferToggleInterval.subscribe(val => console.log('Emitted Buffer:', val));

Additional Resources

• bufferToggle 📰 - Official docs

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📁 Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/operator/bufferToggle.ts