arrays - 如何将 "merge"两个数组放在一起？ (逐项连接字符串)

Question

假设我有两个 NSString 数组:

var firstName = ["Jack", "Sarah", "John"]
var lastName = ["Smith", "Brown", "Doe"]

我怎样才能将它们组合成一个数组，看起来像，

var contacts = ["Jack Smith", "Sarah Brown", "John Doe"]

Answer 1

您可以使用 Zip2(它从 给定的数组) + map():

let firstName = ["Jack", "Sarah", "John"]
let lastName = ["Smith", "Brown", "Doe"]

let contacts = map(Zip2(firstName, lastName)) { $0 + " " + $1 }