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29 lines
995 B
29 lines
995 B
//
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// partition+RxCocoa.swift
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// RxSwiftExt
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//
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// Created by Shai Mishali on 24/11/2018.
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// Copyright © 2018 RxSwift Community. All rights reserved.
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//
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import RxSwift
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import RxCocoa
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public extension SharedSequence {
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/**
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Partition a stream into two separate streams of elements that match, and don't match, the provided predicate.
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- parameter predicate: A predicate used to filter matching and non-matching elements.
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- returns: A tuple of two streams of elements that match, and don't match, the provided predicate.
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*/
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func partition(_ predicate: @escaping (Element) -> Bool) -> (matches: SharedSequence<SharingStrategy, Element>,
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nonMatches: SharedSequence<SharingStrategy, Element>) {
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let stream = self.map { ($0, predicate($0)) }
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let hits = stream.filter { $0.1 }.map { $0.0 }
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let misses = stream.filter { !$0.1 }.map { $0.0 }
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return (hits, misses)
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}
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}
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