CODEWITHSUNDEEP
swiftstringswift3
Henny Lee
Henny Lee

Reputation: 3072

Splitting String using CharacterSet

In Swift 2.x I was able to do:

let str = "Line 1\nLine 2\r\nLine 3\n"
let newlineChars = NSCharacterSet.newlineCharacterSet()
let lines = str.utf16.split { newlineChars.characterIsMember($0) }.flatMap(String.init)

But in Swift 3.x it has changed. Can someone tell me how to use this in Swift 3?

Upvotes: 3

Views: 2885

Answers (2)

jjatie
jjatie

Reputation: 5332

This is a bit simpler in Swift 3 now.

let str = "Line 1\nLine 2\r\nLine 3\n"
let newlineChars = NSCharacterSet.newlines
let lines = str.components(separatedBy: newlineChars)
    .filter{ !$0.isEmpty }

or simply

let str = "Line 1\nLine 2\r\nLine 3\n"
let lines = str.components(separatedBy: .newlines)
    .filter{ !$0.isEmpty }

Upvotes: 6

Nirav D
Nirav D

Reputation: 72460

Answer given by @jjatie is correct but it will also include empty String elements in an Array, you can simply remove empty String elements using filter.

let str = "Line 1\nLine 2\r\nLine 3\n"
let lines = str.components(separatedBy: .newlines).filter { !$0.isEmpty }
print(lines)

Upvotes: 3

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