Swift Text File To Array of Strings

Question

I was wondering what the simplest and cleanest to read a text file into an array of strings is in swift.

Text file:

line 1
line 2
line 3 
line 4


        

Answer 1

Swift 4:

do {
    let contents = try String(contentsOfFile: file, encoding: String.Encoding.utf8)
    let lines : [String] = contents.components(separatedBy: "\n")    
} catch let error as NSError {
    print(error.localizedDescription)
}

Answer 2

Updated for Swift 5:

The const path contains the file path.

do {
    let path: String = "file.txt"
    let file = try String(contentsOfFile: path)
    let text: [String] = file.components(separatedBy: "\n")
} catch let error {
    Swift.print("Fatal Error: \(error.localizedDescription)")
}

If you want to print what's inside of file.txt line by line:

for line in text {
    Swift.print(line)
}

Answer 3

Updated for Swift 3

    var arrayOfStrings: [String]?

    do {
        // This solution assumes  you've got the file in your bundle
        if let path = Bundle.main.path(forResource: "YourTextFilename", ofType: "txt"){
            let data = try String(contentsOfFile:path, encoding: String.Encoding.utf8)                
            arrayOfStrings = data.components(separatedBy: "\n")
            print(arrayOfStrings)
        }
    } catch let err as NSError {
        // do something with Error
        print(err)
    }

Answer 4

Here is a way to convert a string to an array(Once you read in the text):

var myString = "Here is my string"

var myArray : [String] = myString.componentsSeparatedByString(" ")

This returns a string array with the following values: ["Here", "is", "my", "string"]

Answer 5

In Swift 3 for me worked like below:

Import Foundation

let lines : [String] = contents.components(separatedBy: "\n")

Answer 6

First you must read the file:

let text = String(contentsOfFile: someFile, encoding: NSUTF8StringEncoding, error: nil)

Then you separate it by line using the componentsSeparatedByString method:

let lines : [String] = text.componentsSeparatedByString("\n")