在Swift中将字符串拆分红数组？ - Split a String into an array in Swift?

问题：

Say I have a string here: 说我在这里有一个字符串：

var fullName: String = "First Last"

I want to split the string base on white space and assign the values to their respective variables 我想在空白处分割字符串并将值分配给它们各自的变量

var fullNameArr = // something like: fullName.explode(" ") 

var firstName: String = fullNameArr[0]
var lastName: String? = fullnameArr[1]

Also, sometimes users might not have a last name. 一样，有时用户可能没有姓氏。

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解决方案：

参考一： https://stackoom.com/question/1jk7J/在Swift中将字符串拆分红数组
参考二： https://oldbug.net/q/1jk7J/Split-a-String-into-an-array-in-Swift