NSString*NSStringFromCGPoint(CGPoint point);
NSString*NSStringFromCGVector(CGVector vector);
NSString*NSStringFromCGSize(CGSize size);
NSString*NSStringFromCGRect(CGRect rect);
NSString*NSStringFromCGAffineTransform(CGAffineTransform transform);
NSString*NSStringFromUIEdgeInsets(UIEdgeInsets insets);
NSString*NSStringFromUIOffset(UIOffset offset);
NSString*NSStringFromSelector(SELaSelector);
NSString*NSStringFromClass(Class aClass);
NSString*NSStringFromProtocol(Protocol*proto);
NSRange NSUnionRange(NSRange range1, NSRange range2);
NSRange NSIntersectionRange(NSRange range1, NSRange range2);
NSString*NSStringFromRange(NSRange range);
NSRange NSRangeFromString(NSString*aString);
举个栗子：
CGRect frame = CGRectMake(10,10,10,10);
NSLog(@"%@", NSStringFromCGRect(frame));
