Swift: How to get substring from start to last index of character

Question

I want to learn the best/simplest way to turn a string into another string but with only a subset, starting at the beginning and going to the last index of a character.

Answer 1

Swift 2.0 The code below is tested on XCode 7.2 . Please refer to the attached screenshot at the bottom

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        var mainText = "http://stackoverflow.com"

        var range = Range(start: mainText.startIndex.advancedBy(7), end: mainText.startIndex.advancedBy(24))
        var subText = mainText.substringWithRange(range)


        //OR Else use below for LAST INDEX

        range = Range(start: mainText.startIndex.advancedBy(7), end: mainText.endIndex)
        subText = mainText.substringWithRange(range)
    }
}