What Cocoa/Core Foundation helper functions do you wish you knew about 2 years ago?

Question

I just discovered the NSRect helper functions in NSGeometry.h (i.e. NSMidX, NSMaxX, etc...)

These would have made some repetitive coding much easier. I knew about NSMak

Answer 1

One I remember

+ (NSBezierPath *)bezierPathWithRoundedRect:(NSRect)rect xRadius:(CGFloat)xRadius yRadius:(CGFloat)yRadius

Granted figuring out how to draw a rounded rectangle manually is a pretty good exercise. There are others that I am just so used to now.