I know UIKit
uses CGFloat
because of the resolution independent coordinate system.
But every time I want to check if for example frame.origin.x
is 0
it makes me feel sick:
if (theView.frame.origin.x == 0) {
// do important operation
}
Isn’t CGFloat
vulnerable to false positives when comparing with ==
, <=
, >=
, <
, >
?
It is a floating point and they have unprecision problems: 0.0000000000041
for example.
Is Objective-C
handling this internally when comparing or can it happen that a origin.x
which reads as zero does not compare to 0
as true?