[Working with Strings]

playWithStrings.swift

import Foundation

var stringOne = "Hello llollo"
var stringTwo = ""

stringOne.isEmpty
stringTwo.isEmpty

stringOne == "Hello llollo"
stringOne == "hello"
stringOne.hasPrefix("He")
stringOne.hasSuffix("He")

stringOne.replacingOccurrences(of: "ll", with: "pp")

var path = "/one/two/three/four"

//Create start and end indexes
let startIndex = path.index(path.startIndex, offsetBy: 4)
let endIndex = path.index(path.startIndex, offsetBy: 14)

let sPath = path[startIndex..<endIndex]   //returns the String /two/three

//convert the substring to a string
let newStr = String(sPath)

path.substring(to:startIndex)  //returns the String /one
path[..<startIndex] // same in Swift 4

path.substring(from:endIndex) //returns the String /four
path[endIndex...] // same in Swift 4

path.last
path.first

//get the length of the string
var length = path.count