Have you used Compositional Layout in your projects and can you share your experience of implementing it?

Compositional Layout is a powerful tool for creating complex and adaptive collections in iOS, introduced in iOS 13. It allows describing and combining different sections with various layouts, significantly simplifying the creation of flexible interfaces.

In my projects, I used Compositional Layout to implement screens with multiple cell types and sections, such as a news feed with horizontal and vertical lists, as well as grids. The main advantage is the ability to declaratively describe the structure and behavior of each section, which makes maintenance and extension easier.

Example of creating a simple section with horizontal scrolling:

let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(0.3), heightDimension: .fractionalHeight(1.0))
let item = NSCollectionLayoutItem(layoutSize: itemSize)

let groupSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .absolute(150))
let group = NSCollectionLayoutGroup.horizontal(layoutSize: groupSize, subitems: [item])

let section = NSCollectionLayoutSection(group: group)
section.orthogonalScrollingBehavior = .continuous

let layout = UICollectionViewCompositionalLayout(section: section)
collectionView.collectionViewLayout = layout

This approach allowed quickly creating complex UI without manually calculating element sizes and positions.