Swift - 如何从具有String属性的对象数组创建字符串？

Question

如何从具有String属性的对象数组创建字符串？

class Person {
   let name: String
}

let people = [Person(name: "Sam"), Person(name: "Zoey"), Person(name: "Bil")]

let peopleNames: String = //what should be here?

peopleNames = "Sam, Zoey, Bil"

Answer 1

我想你想要"Sam, Zoey, Bil"的结果呢？

在这种情况下,您可以这样做:

people.map { $0.name }.joined(separator: ", ")

我们首先将所有人转换为他们的名字,然后调用joined将所有字符串连接在一起.