如何将两个数组"合并"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"]

如何将它们组合成一个看起来像的数组,

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

Answer 1

您可以使用Zip2(从给定数组创建一系列对)+ map():

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

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