Why are UIView frames made up of floats?

Question

Technically the x, y, width, and height represent a set of dimensions that relate to pixels. I can\'t have 200.23422 pixels so why do they use floats instead of ints?

Answer 1

The dimensions are actually points that on non-retina screens have a 1 to 1 relation to pixels, but for retina screens 1 point = 2 pixels. So on a retina screen you can actually increment by half a point.