結構
Collection
CollectionOfOne
包含單個元素的集合。
聲明
@frozen struct CollectionOfOne<Element>
概述
當您需要有效地將單個值表示為集合時,可以使用 CollectionOfOne
實例。例如,您可以使用帶有連接運算符 (+
) 的 CollectionOfOne
實例將單個元素添加到數組中:
let a = [1, 2, 3, 4]
let toAdd = 100
let b = a + CollectionOfOne(toAdd)
// b == [1, 2, 3, 4, 100]
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 CollectionOfOne contains(_:)用法及代碼示例
- Swift CollectionOfOne compactMap(_:)用法及代碼示例
- Swift CollectionOfOne last(where:)用法及代碼示例
- Swift CollectionOfOne firstIndex(of:)用法及代碼示例
- Swift CollectionOfOne subscript(_:)用法及代碼示例
- Swift CollectionOfOne shuffled()用法及代碼示例
- Swift CollectionOfOne reversed()用法及代碼示例
- Swift CollectionOfOne prefix(through:)用法及代碼示例
- Swift CollectionOfOne contains(where:)用法及代碼示例
- Swift CollectionOfOne reduce(into:_:)用法及代碼示例
- Swift CollectionOfOne sorted()用法及代碼示例
- Swift CollectionOfOne lastIndex(of:)用法及代碼示例
- Swift CollectionOfOne max(by:)用法及代碼示例
- Swift CollectionOfOne allSatisfy(_:)用法及代碼示例
- Swift CollectionOfOne prefix(upTo:)用法及代碼示例
- Swift CollectionOfOne sort()用法及代碼示例
- Swift CollectionOfOne prefix(_:)用法及代碼示例
- Swift CollectionOfOne max()用法及代碼示例
- Swift CollectionOfOne min(by:)用法及代碼示例
- Swift CollectionOfOne reverse()用法及代碼示例
- Swift CollectionOfOne elementsEqual(_:)用法及代碼示例
- Swift CollectionOfOne firstIndex(where:)用法及代碼示例
- Swift CollectionOfOne flatMap(_:)用法及代碼示例
- Swift CollectionOfOne dropFirst(_:)用法及代碼示例
- Swift CollectionOfOne randomElement(using:)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 CollectionOfOne。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。