Aspects snippets [https://github.com/steipete/Aspects]

gistfile1.m

[self.collectionView aspect_hookSelector:@selector(touchesBegan:withEvent:)
                             withOptions:AspectPositionAfter
                              usingBlock:^(id<AspectInfo> aspectInfo, NSSet *touches, UIEvent *event) {
                                  NSLog(@"touchesBegan:withEvent:\n%@\n%@\n", touches, event);
                              }
                                   error:&error];
                                       

[self aspect_hookSelector:@selector(pointInside:withEvent:)
              withOptions:AspectPositionAfter
               usingBlock:^(id info, CGPoint pt, UIEvent *event){
                   NSLog(@"Point: %@\n%@", NSStringFromCGPoint(pt), event);
               }
                    error:nil];