结构
Zip2Sequence
由两个底层序列构成的对序列。
声明
@frozen struct Zip2Sequence<Sequence1, Sequence2> where Sequence1 : Sequence, Sequence2 : Sequence
概述
在Zip2Sequence
实例中,第i
对的元素是每个基础序列的第i
元素。要创建 Zip2Sequence
实例,请使用 zip(_:_:)
函数。
以下示例使用 zip(_:_:)
函数同时迭代字符串数组和可数范围:
let words = ["one", "two", "three", "four"]
let numbers = 1...4
for (word, number) in zip(words, numbers) {
print("\(word): \(number)")
}
// Prints "one: 1"
// Prints "two: 2
// Prints "three: 3"
// Prints "four: 4"
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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注:本文由纯净天空筛选整理自apple.com大神的英文原创作品 Zip2Sequence。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。