實例方法
filter(_:)
返回一個數組,該數組按順序包含滿足給定謂詞的序列元素。
聲明
func filter(_ isIncluded: (Self.Element) throws -> Bool) rethrows -> [Self.Element]
返回值
isIncluded
允許的元素數組。
參數
isIncluded
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,指示該元素是否應包含在返回的數組中。
詳述
在此示例中,filter(_:)
僅用於包含少於五個字符的名稱。
let cast = ["Vivien", "Marlon", "Kim", "Karl"]
let shortNames = cast.filter { $0.count < 5 }
print(shortNames)
// Prints "["Kim", "Karl"]"
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 Int32.Words filter(_:)。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。