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 CollectionOfOne last(where:)用法及代码示例
- Swift CollectionOfOne lastIndex(of:)用法及代码示例
- Swift CollectionOfOne lastIndex(where:)用法及代码示例
- Swift CollectionOfOne lexicographicallyPrecedes(_:)用法及代码示例
- Swift CollectionOfOne contains(_:)用法及代码示例
- Swift CollectionOfOne compactMap(_:)用法及代码示例
- Swift CollectionOfOne firstIndex(of:)用法及代码示例
- Swift CollectionOfOne subscript(_:)用法及代码示例
- Swift CollectionOfOne shuffled()用法及代码示例
- Swift CollectionOfOne reversed()用法及代码示例
- Swift CollectionOfOne prefix(through:)用法及代码示例
- Swift CollectionOfOne contains(where:)用法及代码示例
- Swift CollectionOfOne reduce(into:_:)用法及代码示例
- Swift CollectionOfOne sorted()用法及代码示例
- Swift CollectionOfOne max(by:)用法及代码示例
- Swift CollectionOfOne allSatisfy(_:)用法及代码示例
- Swift CollectionOfOne prefix(upTo:)用法及代码示例
- Swift CollectionOfOne sort()用法及代码示例
- Swift CollectionOfOne prefix(_:)用法及代码示例
- Swift CollectionOfOne max()用法及代码示例
- Swift CollectionOfOne min(by:)用法及代码示例
- Swift CollectionOfOne reverse()用法及代码示例
- Swift CollectionOfOne elementsEqual(_:)用法及代码示例
- Swift CollectionOfOne firstIndex(where:)用法及代码示例
- Swift CollectionOfOne flatMap(_:)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 CollectionOfOne 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。