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子序列。
聲明
func dropFirst(_ k: Int = 1) -> Self.SubSequence
返回值
在指定數量的元素之後開始的子序列。
參數
k
從集合開頭刪除的元素數。
k
必須大於或等於零。
詳述
如果要刪除的元素數超過集合中的元素數,則結果為空子序列。
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+
相關用法
- Swift UnsafeMutableRawBufferPointer dropLast(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer shuffle()用法及代碼示例
- Swift UnsafeMutableRawBufferPointer compactMap(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer contains(where:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer allSatisfy(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer map(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer starts(with:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer isEmpty用法及代碼示例
- Swift UnsafeMutableRawBufferPointer sorted()用法及代碼示例
- Swift UnsafeMutableRawBufferPointer indices用法及代碼示例
- Swift UnsafeMutableRawBufferPointer randomElement(using:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer reduce(_:_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer split(maxSplits:omittingEmptySubsequences:whereSeparator:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer sort(by:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer lexicographicallyPrecedes(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer forEach(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer suffix(from:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer partition(by:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer first用法及代碼示例
- Swift UnsafeMutableRawBufferPointer flatMap(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer firstIndex(where:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer reversed()用法及代碼示例
- Swift UnsafeMutableRawBufferPointer min()用法及代碼示例
- Swift UnsafeMutableRawBufferPointer prefix(_:)用法及代碼示例
- Swift UnsafeMutableRawBufferPointer reverse()用法及代碼示例
注:本文由純淨天空篩選整理自apple.com大神的英文原創作品 UnsafeMutableRawBufferPointer 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。