I am having the same problem as earlier with a different line of code; but this time, I wasn't able to fix it with the same approach as last time:
var Y : Int = 0
var X : Int = 0
@IBOutlet var ball : UIImageView!
ball.center = CGPointMake(ball.center.x + X, ball.center.y + Y)
This is the error I am getting:
binary operator + cannot be applied to operands of type CGfloat int
Declare them, instead, as the following:
let X : CGFloat = 0.0
let Y : CGFloat = 0.0
Replying to your comment:
The error has nothing to do with them being declared as var
or let
.
You could declare them as var
and if you so insist on declaring them as Int
, you would still need to do the following:
var X : Int = 0
var Y : Int = 0
ball.center = CGPointMake(view.center.x + CGFloat(X), view.center.y + CGFloat(Y))
The problem is that you are not having the same variable types, for example you can't add bool and string.
Change it to CGFloat instead of int:
let X : CGFloat = 0.0
let Y : CGFloat = 0.0
ball.center.x is a CGFloat and X is an Int. That's where the compiler is complaining.
Swift likes you to type cast numeric types (as if there wasn't a hierarchy in numeric domains) but you can avoid that by declaring X and Y as CGFloat instead of Int.
You could also get rid of the issue for good by defining the operator (that Swift should already have imho):
infix operator + {}
func +(left:CGFloat, right:Int) -> CGFloat
{ return left + CGFloat(right) }
func +(left:Int, right:CGFloat) -> CGFloat
{ return CGFloat(left) + right }