How to split a string by new lines in Swift

Question

I have a string that I got from a text file.

Text file:

Line 1
Line 2
Line 3
...

I want to convert it to an array, one array element p

Answer 1

Swift 4:

I would recommend to first save your CSV into string if you haven't already done it, then "clean" the string by removing unnecessary carriage returns

        let dataString = String(data: yourData!, encoding: .utf8)!

        var cleanFile = dataString.replacingOccurrences(of: "\r", with: "\n")
        cleanFile = cleanFile.replacingOccurrences(of: "\n\n", with: "\n")

Above will give you a string with a most desirable format, then you can separate the string using \n as your separator:

        let csvStrings = cleanFile.components(separatedBy: ["\n"])

Now you have an array of 3 items like:

["Line1","Line2","Line3"]

I am using a CSV file and after doing this, I am splitting items into components, so if your items were something like:

["Line1,Line2,Line3","LineA,LineB,LineC"]

        let component0 = csvStrings[0].components(separatedBy: [","]) // ["Line1","Line2","Line3"]
        let component1 = csvStrings[1].components(separatedBy: [","]) // ["LineA","LineB","LineC"]

Answer 2

in Xcode 8.2, Swift 3.0.1:

Use NSString method components(separatedBy:)

let text = "line1\nline2"
let array = text.components(separatedBy: CharacterSet.newlines)

Or use String method enumerateLines, like Leo Dabus's answer

Answer 3

let test1 = "Line1\n\rLine2\nLine3\rLine4"
let t1 = test1.componentsSeparatedByCharactersInSet(NSCharacterSet.newlineCharacterSet())
let t2 = t1.filter{ $0 != "" }
let t3 = t1.filter{ !$0.isEmpty }