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。
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
这在Beta 5中再次发生了变化。哭泣!它现在是CollectionType上的一个方法
旧版本:
var fullName = "First Last"
var fullNameArr = split(fullName) {$0 == " "}
新建:
var fullName = "First Last"
var fullNameArr = fullName.split {$0 == " "}
苹果发行说明
其他回答
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]
假设您有一个名为“Hello World”的变量,如果您想将其拆分并存储为两个不同的变量,可以这样使用:
var fullText = "Hello World"
let firstWord = fullText.text?.components(separatedBy: " ").first
let lastWord = fullText.text?.components(separatedBy: " ").last
对于swift 2,XCode 7.1:
let complete_string:String = "Hello world"
let string_arr = complete_string.characters.split {$0 == " "}.map(String.init)
let hello:String = string_arr[0]
let world:String = string_arr[1]
这里是我刚刚构建的一个算法,它将通过数组中的任何字符分割字符串,如果有任何希望保留具有分割字符的子字符串,可以将swall参数设置为true。
Xcode 7.3-Swift 2.2:
extension String {
func splitBy(characters: [Character], swallow: Bool = false) -> [String] {
var substring = ""
var array = [String]()
var index = 0
for character in self.characters {
if let lastCharacter = substring.characters.last {
// swallow same characters
if lastCharacter == character {
substring.append(character)
} else {
var shouldSplit = false
// check if we need to split already
for splitCharacter in characters {
// slit if the last character is from split characters or the current one
if character == splitCharacter || lastCharacter == splitCharacter {
shouldSplit = true
break
}
}
if shouldSplit {
array.append(substring)
substring = String(character)
} else /* swallow characters that do not equal any of the split characters */ {
substring.append(character)
}
}
} else /* should be the first iteration */ {
substring.append(character)
}
index += 1
// add last substring to the array
if index == self.characters.count {
array.append(substring)
}
}
return array.filter {
if swallow {
return true
} else {
for splitCharacter in characters {
if $0.characters.contains(splitCharacter) {
return false
}
}
return true
}
}
}
}
例子:
"test text".splitBy([" "]) // ["test", "text"]
"test++text--".splitBy(["+", "-"], swallow: true) // ["test", "++" "text", "--"]
只需在fullName上调用componentsSeparatedByString方法
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]