windowToggle

연산자(operator) 정의: windowToggle(openings: Observable, closingSelector: function(value): Observable): Observable

Collect and emit observable of values from source between opening and closing emission.

Examples

Example 1: Toggle window at increasing interval

( jsBin | jsFiddle )

//emit immediately then every 1s
const source = Rx.Observable.timer(0,1000);
//toggle window on every 5
const toggle = Rx.Observable.interval(5000);
const example = source
    //turn window on every 5s
    .windowToggle(toggle, (val) => Rx.Observable.interval(val * 1000))
    .do(() => console.log('NEW WINDOW!'))

const subscribeTwo = example 
  //window emits nested observable
  .mergeAll()
/*
  output:
  "NEW WINDOW!"
  5
  "NEW WINDOW!"
  10
  11
  "NEW WINDOW!"
  15
  16
  "NEW WINDOW!"
  20
  21
  22
*/
  .subscribe(val => console.log(val));

Additional Resources

• windowToggle - Official docs
• Split an RxJS observable conditionally with windowToggle - André Staltz

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