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 FlattenSequence last(where:)用法及代码示例
- Swift FlattenSequence lastIndex(of:)用法及代码示例
- Swift FlattenSequence lastIndex(where:)用法及代码示例
- Swift FlattenSequence lexicographicallyPrecedes(_:)用法及代码示例
- Swift FlattenSequence prefix(_:)用法及代码示例
- Swift FlattenSequence max(by:)用法及代码示例
- Swift FlattenSequence forEach(_:)用法及代码示例
- Swift FlattenSequence split(separator:maxSplits:omittingEmptySubsequences:)用法及代码示例
- Swift FlattenSequence dropLast(_:)用法及代码示例
- Swift FlattenSequence sorted(by:)用法及代码示例
- Swift FlattenSequence filter(_:)用法及代码示例
- Swift FlattenSequence suffix(from:)用法及代码示例
- Swift FlattenSequence first(where:)用法及代码示例
- Swift FlattenSequence drop(while:)用法及代码示例
- Swift FlattenSequence reduce(into:_:)用法及代码示例
- Swift FlattenSequence shuffled()用法及代码示例
- Swift FlattenSequence dropFirst(_:)用法及代码示例
- Swift FlattenSequence joined()用法及代码示例
- Swift FlattenSequence randomElement(using:)用法及代码示例
- Swift FlattenSequence randomElement()用法及代码示例
- Swift FlattenSequence sorted()用法及代码示例
- Swift FlattenSequence split(maxSplits:omittingEmptySubsequences:whereSeparator:)用法及代码示例
- Swift FlattenSequence shuffled(using:)用法及代码示例
- Swift FlattenSequence allSatisfy(_:)用法及代码示例
- Swift FlattenSequence first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 FlattenSequence 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。