假设我这里有一个字符串:

var fullName: String = "First Last"

我想在空白处拆分字符串,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。


当前回答

Swift 5.2的更新和最简单的方式

let paragraph = "Bob hit a ball, the hit BALL flew far after it was hit. Hello! Hie, How r u?"

let words = paragraph.components(separatedBy: [",", " ", "!",".","?"])

这张照片,

[“Bob”,“hit”,“a”,“ball”,“the”,“击球”,“ball”,“fly”,“far”,“after”,“it”,“was”,“hit”,“Hello”,“Hie”,“How”,“u”,“”]

但是,如果要过滤空字符串,

let words = paragraph.components(separatedBy: [",", " ", "!",".","?"]).filter({!$0.isEmpty})

输出

[“Bob”,“hit”,“a”,“ball”,“the”,“命中”,“ball”,“fly”,“far”,“after”,“it”,“was”,“hit”,“Hello”,”Hie“,”How“,”r“,”u“]

但请确保,Foundation已导入。

其他回答

或者没有闭包,你可以在Swift 2中这样做:

let fullName = "First Last"
let fullNameArr = fullName.characters.split(" ")
let firstName = String(fullNameArr[0])

Xcode 8.0/Swift 3

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

var firstname = fullNameArr[0] // First
var lastname = fullNameArr[1] // Last

漫长的道路:

var fullName: String = "First Last"
fullName += " " // this will help to see the last word

var newElement = "" //Empty String
var fullNameArr = [String]() //Empty Array

for Character in fullName.characters {
    if Character == " " {
        fullNameArr.append(newElement)
        newElement = ""
    } else {
        newElement += "\(Character)"
    }
}


var firsName = fullNameArr[0] // First
var lastName = fullNameArr[1] // Last

根据Swift 2.2

您只需编写2行代码,就会得到拆分字符串。

let fullName = "FirstName LastName"
var splitedFullName = fullName.componentsSeparatedByString(" ")
print(splitedFullName[0])
print(splitedFullName[1]) 

享受。:)

最简单的方法是使用组件SeparatedBy:

对于Swift 2:

import Foundation
let fullName : String = "First Last";
let fullNameArr : [String] = fullName.componentsSeparatedByString(" ")

// And then to access the individual words:

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

对于Swift 3:

import Foundation

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

// And then to access the individual words:

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

Swift 4使拆分字符变得更加容易,只需为字符串使用新的拆分函数即可。

例子:让s=“嗨,你好”让a=s.split(分隔符:“,”)打印(a)

现在您得到了一个带有“hi”和“hello”的数组。