swift - 根据数组中的值替换字符串中的多个单词

Question

我有一个字符串数组和另一个字符串:

let array = ["one","two","three"]
let string = "one two three four five six seven"

从字符串中删除数组中出现的事件的 Swifty 方法是什么？我尝试了一个 for 循环，但想看看过滤器在这种情况下是否有效？

Answer 1

我相信您想到的那种filter 表达式是这样的:

let finalString = string
    .split(separator: " ")  // Split them
    .lazy                   // Maybe it's very long, and we don't want intermediates
    .map(String.init)       // Convert to the same type as array
    .filter { !array.contains($0) } // Filter
    .joined(separator: " ") // Put them back together