Strange problem comparing floats in objective-C

Question

At some point in an algorithm I need to compare the float value of a property of a class to a float. So I do this:

if (self.scroller.currentValue <= 0.1)          


        

Answer 1

Generally, in any language, you can't really count on equality of float-like types. In your case since it looks like you have more control, it does appear that 0.1 is not float by default. You could probably find that out with sizeof(0.1) (vs. sizeof(self.scroller.currentValue).