实例属性
last
集合的最后一个元素。
声明
var last: Self.Element? { get }
详述
如果集合为空,则此属性的值为 nil
。
let numbers = [10, 20, 30, 40, 50]
if let lastNumber = numbers.last {
print(lastNumber)
}
// Prints "50"
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
相关用法
- Swift UInt32.Words lastIndex(of:)用法及代码示例
- Swift UInt32.Words last(where:)用法及代码示例
- Swift UInt32.Words lastIndex(where:)用法及代码示例
- Swift UInt32.Words lexicographicallyPrecedes(_:)用法及代码示例
- Swift UInt32.Words min(by:)用法及代码示例
- Swift UInt32.Words contains(_:)用法及代码示例
- Swift UInt32.Words filter(_:)用法及代码示例
- Swift UInt32.Words dropFirst(_:)用法及代码示例
- Swift UInt32.Words contains(where:)用法及代码示例
- Swift UInt32.Words index(_:offsetBy:limitedBy:)用法及代码示例
- Swift UInt32.Words firstIndex(where:)用法及代码示例
- Swift UInt32.Words randomElement()用法及代码示例
- Swift UInt32.Words allSatisfy(_:)用法及代码示例
- Swift UInt32.Words split(maxSplits:omittingEmptySubsequences:whereSeparator:)用法及代码示例
- Swift UInt32.Words enumerated()用法及代码示例
- Swift UInt32.Words map(_:)用法及代码示例
- Swift UInt32.Words isEmpty用法及代码示例
- Swift UInt32.Words randomElement(using:)用法及代码示例
- Swift UInt32.Words split(separator:maxSplits:omittingEmptySubsequences:)用法及代码示例
- Swift UInt32.Words indices用法及代码示例
- Swift UInt32.Words suffix(_:)用法及代码示例
- Swift UInt32.Words shuffled()用法及代码示例
- Swift UInt32.Words compactMap(_:)用法及代码示例
- Swift UInt32.Words max()用法及代码示例
- Swift UInt32.Words subscript(_:)用法及代码示例
注:本文由纯净天空筛选整理自apple.com大神的英文原创作品 UInt32.Words last。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。