實例屬性
indices
對集合下標有效的索引,按升序排列。
聲明
var indices: UInt.Words.Indices { get }
詳述
集合的indices
屬性可以持有對集合本身的強引用,從而導致集合被非唯一引用。如果在迭代集合的索引時改變集合,強引用可能會導致集合的意外副本。為避免意外複製,請改用以 startIndex
開頭的 index(after:)
方法來生成索引。
var c = MyFancyCollection([10, 20, 30, 40, 50])
var i = c.startIndex
while i != c.endIndex {
c[i] /= 5
i = c.index(after: i)
}
// c == MyFancyCollection([2, 4, 6, 8, 10])
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 UInt.Words index(_:offsetBy:limitedBy:)用法及代碼示例
- Swift UInt.Words isEmpty用法及代碼示例
- Swift UInt.Words flatMap(_:)用法及代碼示例
- Swift UInt.Words dropLast(_:)用法及代碼示例
- Swift UInt.Words sorted(by:)用法及代碼示例
- Swift UInt.Words min(by:)用法及代碼示例
- Swift UInt.Words enumerated()用法及代碼示例
- Swift UInt.Words first(where:)用法及代碼示例
- Swift UInt.Words lexicographicallyPrecedes(_:)用法及代碼示例
- Swift UInt.Words shuffled(using:)用法及代碼示例
- Swift UInt.Words compactMap(_:)用法及代碼示例
- Swift UInt.Words lastIndex(where:)用法及代碼示例
- Swift UInt.Words prefix(through:)用法及代碼示例
- Swift UInt.Words map(_:)用法及代碼示例
- Swift UInt.Words max()用法及代碼示例
- Swift UInt.Words suffix(from:)用法及代碼示例
- Swift UInt.Words endIndex用法及代碼示例
- Swift UInt.Words forEach(_:)用法及代碼示例
- Swift UInt.Words subscript(_:)用法及代碼示例
- Swift UInt.Words lastIndex(of:)用法及代碼示例
- Swift UInt.Words min()用法及代碼示例
- Swift UInt.Words randomElement(using:)用法及代碼示例
- Swift UInt.Words reduce(_:_:)用法及代碼示例
- Swift UInt.Words first用法及代碼示例
- Swift UInt.Words shuffled()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 UInt.Words indices。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。