ios - 在 Swift 中将字符串拆分为数组？

Question

假设我这里有一个字符串:

var fullName: String = "First Last"

我想根据空格拆分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]

此外，有时用户可能没有姓氏。

Answer 1

只需调用 fullName 上的 componentsSeparatedByString 方法即可

import Foundation

var fullName: String = "First Last"
let fullNameArr = fullName.componentsSeparatedByString(" ")

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

Swift 3+ 更新

import Foundation

let fullName    = "First Last"
let fullNameArr = fullName.components(separatedBy: " ")

let name    = fullNameArr[0]
let surname = fullNameArr[1]