ios - convert user input to array of Ints in swift -

i'm trying make simple ios game learn programming in swift. user inputs 4 digits number in text field (keyboard type number pad if matters) , program should take 4 digits number , put each digit in array. want like

userinput = "1234" 

to become

inputarray = [1,2,3,4] 

i know converting string array of characters easy in swift

var text : string = "barfoo" var arraytext = array(text) //returns ["b","a","r","f","o","o"] 

my problem need array filled integers, not characters. if convert user input int, becomes single number if user enters "1234" array gets populated [1234] , not [1,2,3,4]

so tried treat user input string, make array of characters and, loop through elements of array, convert them ints , put them second array, like:

var input : string = textfield.text var inputarray = array(input) var intsarray = [int]()  var = 0; < inputarray.count ; i++ {     intsarray[i] = inputarray[i].toint() } 

but doesn't compile , gives me error: 'character' not have member named 'toint'

what doing wrong?

you use:

let text : string = "123a" let digits = array(text).map { string($0).toint()! } // crash if character not int 

but crash if input not valid.

you can validate checking result of toint():

let text : string = "1234" var digits = array(text).reduce([int](), combine: { (var digits, optionaldigit) -> [int] in     if let digit = string(optionaldigit).toint() {         digits.append(digit)     }      return digits })  if countelements(text) == digits.count {     // digits valid } else {     // has invalid digits }