實例方法
sink(receive
sink(receiveValue:)
將具有基於閉包行為的訂閱者附加到永不失敗的發布者。
聲明
func sink(receiveValue: @escaping ((Self.Output) -> Void)) -> AnyCancellable
當
Failure
為 Never
時可用。返回值
一個可取消的實例,當您結束接收值的分配時使用它。結果的重新分配將關閉訂閱流。
參數
receiveValue
在收到值時執行的關閉。
詳述
使用Publisher/sink(receiveValue:)
觀察發布者收到的值並將它們打印到控製台。該操作符隻能在流不失敗的情況下使用,即發布者的 Publisher/Failure
類型為
時。Never
在此示例中,
發布者將整數發布到 Range
Publisher/sink(receiveValue:)
運算符的 receiveValue
閉包,該閉包將它們打印到控製台:
let integers = (0...3)
integers.publisher
.sink { print("Received \($0)") }
// Prints:
// Received 0
// Received 1
// Received 2
// Received 3
此方法創建訂閱者並在返回訂閱者之前立即請求無限數量的值。應保留返回值,否則將取消流。
可用版本
iOS 13.0+, iPadOS 13.0+, macOS 10.15+, Mac Catalyst 13.0+, tvOS 13.0+, watchOS 6.0+
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注:本文由純淨天空篩選整理自apple.com大神的英文原創作品 Result.Publisher sink(receiveValue:)。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。