實例方法
drop
dropFirst(_:)
返回一個包含除給定數量的初始元素之外的所有元素的序列。
聲明
func dropFirst(_ k: Int = 1) -> DropFirstSequence<Self>
返回值
在指定數量的元素之後開始的序列。
參數
k
從序列開頭刪除的元素數。
k
必須大於或等於零。
詳述
如果要刪除的元素數超過序列中的元素數,則結果為空序列。
let numbers = [1, 2, 3, 4, 5]
print(numbers.dropFirst(2))
// Prints "[3, 4, 5]"
print(numbers.dropFirst(10))
// Prints "[]"
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 UnsafeRawBufferPointer.Iterator dropFirst(_:)。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。