83 lines
1.8 KiB
Swift
83 lines
1.8 KiB
Swift
/*:
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> # IMPORTANT: To use `Rx.playground`, please:
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1. Open `Rx.xcworkspace`
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2. Build `RxSwift-OSX` scheme
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3. And then open `Rx` playground in `Rx.xcworkspace` tree view.
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4. Choose `View > Show Debug Area`
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*/
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//: [<< Previous](@previous) - [Index](Index)
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import Cocoa
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import RxSwift
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/*:
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## Conditional and Boolean Operators
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Operators that evaluate one or more Observables or items emitted by Observables.
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*/
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/*:
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### `takeUntil`
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Discard any items emitted by an Observable after a second Observable emits an item or terminates.
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[More info in reactive.io website]( http://reactivex.io/documentation/operators/takeuntil.html )
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*/
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example("takeUntil") {
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let originalSequence = PublishSubject<Int>()
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let whenThisSendsNextWorldStops = PublishSubject<Int>()
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_ = originalSequence
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.takeUntil(whenThisSendsNextWorldStops)
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.subscribe {
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print($0)
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}
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originalSequence.on(.Next(1))
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originalSequence.on(.Next(2))
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originalSequence.on(.Next(3))
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originalSequence.on(.Next(4))
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whenThisSendsNextWorldStops.on(.Next(1))
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originalSequence.on(.Next(5))
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}
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/*:
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### `takeWhile`
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Mirror items emitted by an Observable until a specified condition becomes false
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[More info in reactive.io website]( http://reactivex.io/documentation/operators/takewhile.html )
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*/
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example("takeWhile") {
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let sequence = PublishSubject<Int>()
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_ = sequence
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.takeWhile { int in
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int < 4
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}
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.subscribe {
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print($0)
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}
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sequence.on(.Next(1))
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sequence.on(.Next(2))
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sequence.on(.Next(3))
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sequence.on(.Next(4))
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sequence.on(.Next(5))
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}
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//: [Index](Index) - [Next >>](@next)
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