實例方法
remove
removeAll(where:)
刪除所有滿足給定謂詞的元素。
聲明
mutating func removeAll(where shouldBeRemoved: (Self.Element) throws -> Bool) rethrows
參數
shouldBeRemoved
一個閉包,它將序列的一個元素作為其參數,並返回一個布爾值,指示是否應從集合中刪除該元素。
詳述
使用此方法刪除集合中滿足特定條件的每個元素。保留其餘元素的順序。此示例從字符串中刪除所有元音:
var phrase = "The rain in Spain stays mainly in the plain."
let vowels: Set<Character> = ["a", "e", "i", "o", "u"]
phrase.removeAll(where: { vowels.contains($0) })
// phrase == "Th rn n Spn stys mnly n th pln."
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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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 String.UnicodeScalarView removeAll(where:)。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。