Clip last UICollectionViewCell if their total width is greater the UICollectionView width

Question

I have a scenario where I have a horizontal scrolling collection view has a number of X cells. The default width of the cell is 71 points.

Depending on the value of X, I might have less cells when their total width is less than the width of the collection view, which is fine. Bun if their total width (cell count * 71) is larger than the width of the collectionView, show a number of cells Y that fit perfectly and half of the next one, so the user knows is horizontally scrollable.

This is what I have now

extension ViewController: UICollectionViewDelegateFlowLayout {
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        if dataSource.count * 71 <= collectionView.bounds.width {
            return CGSize(width: 71, height: collectionView.bounds.height)
        } else {
            // if it's larger just show Y number of cells with the last one visible cut in half, so the user knows it's horizontally scrollable 
        }
    }
}

Answer 1

Found my solution, thanks all for the help

 func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
    let collectionViewWidth = self.width
    let numberOfCellsToFit = round(collectionViewWidth / cellWidth)
    let spaceBetweenCells = (collectionViewWidth - cellWidth/2) / (numberOfCellsToFit - 1)

    return (spaceBetweenCells - cellWidth)
   }