實例方法
contains(_:)
返回一個布爾值,指示序列是否包含給定元素。
聲明
func contains(_ element: Self.Element) -> Bool
當
Element
符合 Equatable
時可用。返回值
true
如果在序列中找到該元素;否則,false
。
參數
element
要在序列中查找的元素。
詳述
此示例檢查最喜歡的演員是否在存儲電影演員的數組中。
let cast = ["Vivien", "Marlon", "Kim", "Karl"]
print(cast.contains("Marlon"))
// Prints "true"
print(cast.contains("James"))
// Prints "false"
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 IndexingIterator contains(_:)。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。