Using the split function in Swift 2

Question

Let\'s say I want to split a string by an empty space. This code snippet works fine in Swift 1.x. It does not work in Swift 2 in Xcode 7 Beta 1.

var str = \"         


        

Answer 1

split is a method in an extension of CollectionType which, as of Swift 2, String no longer conforms to. Fortunately there are other ways to split a String:

1. Use componentsSeparatedByString:

   "ab cd".componentsSeparatedByString(" ") // ["ab", "cd"]
   

   As pointed out by @dawg, this requires you import Foundation.

2. Instead of calling split on a String, you could use the characters of the String. The characters property returns a String.CharacterView, which conforms to CollectionType:

   "                                                                    
   
                                                           
               

Answer 2

Swift 4

let str = "Hello Bob"
let strSplitArray = str.split(separator: " ")
strSplitArray.first!    // "Hello"
strSplitArray.last!     // "Bob"

Xcode 7.1.1 with Swift 2.1

let str = "Hello Bob"
let strSplit = str.characters.split(" ")
String(strSplit.first!)
String(strSplit.last!)

Answer 3

In Swift 3 componentsSeparatedByString and split is used this way.

let splitArray = "Hello World".components(separatedBy: " ") // ["Hello", "World"]

split

let splitArray = "Hello World".characters.split(separator: " ").map(String.init) // ["Hello", "World"]