“'CGFloat' is not convertible to 'Double'” error in Swift (iOS)

Question

I\'m trying to cut an image into 9 pieces in Swift. I\'m getting this error:

\'CGFloat\' is not convertible to \'Double\'

Answer 1

In swift there is no implicit conversion of numeric data types, and you are mixing integers and floats. You have to explicitly convert the indexes to CGFloats:

var intWidth = ( CGFloat(i) * (sizeOfImage.width/3.0))
var fltHeight = ( CGFloat(j) * (sizeOfImage.height/3.0))

As often happening in swift, the error message is misleading - it says:

'CGFloat' is not convertible to 'Double'

whereas I'd expect:

'CGFloat' is not convertible to 'Int'