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RxSwift.ObservableType::isEmpty()
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| extension ObservableType { | |
| func isEmpty() -> Single<Bool> { | |
| return self | |
| .take(1) | |
| .map { _ in false } | |
| .ifEmpty(switchTo: Observable.just(true)) | |
| .asSingle() | |
| } | |
| } |
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