44 lines
1.8 KiB
Swift
44 lines
1.8 KiB
Swift
//
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// Copyright (c) 2017 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import RxSwift
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public extension Single {
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/// Returns an single that invokes the specified factory function whenever a new observer subscribes.
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///
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/// - Parameter elementFactory: Element factory function to invoke for each observer
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/// that subscribes to the resulting sequence.
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/// - Returns: A single whose observers trigger an invocation of the given element factory function.
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static func deferredJust(_ elementFactory: @escaping () throws -> Element) -> Single<Element> {
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return .create { observer in
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do {
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observer(.success(try elementFactory()))
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} catch {
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observer(.error(error))
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}
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return Disposables.create()
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}
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}
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}
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