ios - 如何在 Swift 中使用另一个数组中的元素过滤数组？

Question

我有两个数组

let toBeFiltered = ["star0", "star2", "star1", "star0", "star3", "star4"]
let theFilter = ["star1", "star3"]

如何使用第二个数组过滤第一个数组？实际上 theFilter 可以动态改变，例如，

let theFilter = ["star2"]
or maybe
let theFilter = ["star0", "star4", "star2"]

感谢您的帮助:)

Answer 1

使用集合操作

Set(toBeFiltered).intersection(Set(theFilter))

阅读更多:https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/CollectionTypes.html