swift How to cast from Int? to String

Question

In Swift, i cant cast Int to String by:

var iString:Int = 100
var strString = String(iString)

But my variable in Int? , there for error:

Answer 1

You can try this to convert Int? to string

let myString : String = "42"
let x : Int? = myString.toInt()

let newString = "\(x ?? 0)"
print(newString)        // if x is nil then optional value will be "0"