A set of helper functions I've been using in various XCode projects, abstracted for great good!
Really all you should do is check out the header file, but here's a list of the methods available.
CGRect CGRectSetSize(CGRect rect, CGSize size);
CGRect CGRectSetOrigin(CGRect rect, CGPoint origin);
CGRect CGRectSetWidth(CGRect rect, CGFloat width);
CGRect CGRectSetHeight(CGRect rect, CGFloat height);
CGRect CGRectSetYOrigin(CGRect rect, CGFloat yOrigin);
CGRect CGRectSetXOrigin(CGRect rect, CGFloat xOrigin);
CGRect CGRectCenterRectInRect(CGRect subRect, CGRect masterRect);
CGRect CGRectCenterRectInRectHorizontally(CGRect subRect, CGRect masterRect);
CGRect CGRectCenterRectInRectVertically(CGRect subRect, CGRect masterRect);
CGRect CGRectInsetByPercent(CGRect rect, CGFloat xPercent, CGFloat yPercent);
void CGRectIntegralSizeToFit(UIView *view);
CGSize CGSizeByDoubling(CGSize size);
CGRect CGRectByDoublingSize(CGRect rect);Use CocoaPods, you dingus!
# Podfile
platform :ios, '5.0'
pod 'BDKGeometry', '~> 1.1.0'