Horizontal Scrolling - Stack of cards - using Swift 2

So looks like cards like layout and horizontal scrolling is really getting some tractions and many apps have started using it. Offcourse there are several ways to do it but i found a nifty easy trick to build this using UICollectionViewController with least amount of code. Here is how it looks like.

  Fancy right ;) But no clue about why i came up with "Swappy Dagger"   Anyways the whole magic is in this secret sauce:

    func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {
        
        let pageWidth:Float = 310 + 25;
        
        let currentOffSet:Float = Float(scrollView.contentOffset.x)
        
        print(currentOffSet)
        let targetOffSet:Float = Float(targetContentOffset.memory.x)
        
        print(targetOffSet)
        var newTargetOffset:Float = 0
        
        if(targetOffSet > currentOffSet){
            newTargetOffset = ceilf(currentOffSet / pageWidth) * pageWidth
        }else{
            newTargetOffset = floorf(currentOffSet / pageWidth) * pageWidth
        }
        
        if(newTargetOffset < 0){
            newTargetOffset = 0;
        }else if (newTargetOffset > Float(scrollView.contentSize.width)){
            newTargetOffset = Float(scrollView.contentSize.width)
        }
        
        targetContentOffset.memory.x = CGFloat(currentOffSet)
        scrollView.setContentOffset(CGPointMake(CGFloat(newTargetOffset), 0), animated: true)
        
    }

Without that you won't get the feel. Anyways to get the code you can download it from my Git Repo.  If this is useful spread the love by sharing. Cheers!