RxSwift: TakeUntil Operator

TakeUntil(trigger)

• Keep taking until some trigger observable emits an element.
• Emit nothing after the trigger observable has emitted an element.
• Can be used to dispose of a subscription instead of adding to a dispose bag.

----7--9-----1--4---->
----------0----0----->

takeUntil(trigger)

----7--9------------->

let subject = PublishSubject<String>()
let trigger = PublishSubject<String>()

subject.takeUntil(tigger).subscribe(onNext: ....)

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