text: //
  //  RandomIntegerExtensions.swift
  //
  //  Created by Matthew Carroll on 8/17/16.
  //  Copyright © 2016 Matthew Carroll. All rights reserved.
  //
  
  import Foundation
  
  public extension String {
      
      init(randomLettersOfCount count: Int) {
          let firstAsciiValue: UInt8 = 97
          let lastAsciiValue: UInt8 = 122
          let asciiRange = firstAsciiValue...lastAsciiValue
          let charCount = 0..<count
          let characters = charCount.map { _ -> Character in
              let codeUnit = UInt8.random(in: asciiRange)
              return Character(UnicodeScalar(codeUnit))
          }
          self = String(characters)
      }
  }
  