title: uicollection view load more data at bottom scroll. iOS Swift
body: <p>I want to load more data in <code>UICollectionView</code> when I scroll bottom to the <code>UICollectionView</code>. I did not found any library for swift language. can anyone please tell me how can I do this?</p>
  
  <p><strong>Question 1</strong> -> how to load more data when I scroll down</p>
  
  <p><strong>Question 2</strong> -> If I will able to get more data on scrolling to the bottom so how should I add in same mutable array. so it load whole data.</p>