Keyframe animations in SwiftUI
SwiftUI is great. It is better year after year. Since iOS 15 is truly awesome but some of us have to work with the first version and support iOS 13.
Apple keeps adding
Copy on Write in Swift explained with examples
Theory
According to Wikipedia - Copy on Write "is a resource-management technique used in computer programming to efficiently implement a "duplicate" or "copy" operation on modifiable resources."
Testing async/await exceptions
We all know how testing your code is important for stable releases and early bug detection. We should test happy paths, corner cases, and thrown errors.
Old school
Before async/await coroutines were
Bidirectional collection view with orthogonalScrollingBehavior
Before iOS 13, if you wanted to have a vertical collection view with horizontally scrolling sections it required embedding a scroll view inside the collection view cell, passing the model around, handling touch
The power of Compositional Layout
With iOS 13 Apple introduced a new and very powerful way of creating layouts for UICollectionView - UICollectionViewCompositionalLayout.
The compositional layout uses three types of "building blocks":
- item - describes