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

I like to create small extensions for this:

extension Int {
    var stringValue:String {
        return "\(self)"
    }
}

This makes it possible to call optional ints, without having to unwrap and think about nil values:

var string = optionalInt?.stringValue