Artur Gruchała

I started learning iOS development when Swift was introduced. Since then I've tried Xamarin, Flutter, and React Native. Nothing is better than native code:)

Testing async/await exceptions

10 days ago 2 min read Swift Testing Xcode

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

2 months ago 2 min read Swift UIKit

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

2 months ago 6 min read UIKit Swift

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 properties of

SwiftGen - Strongly typed assets in Xcode

5 months ago 3 min read Misc Swift Xcode

I remember when I was in university, learning Android SDK and writing my first mobile app. All assets were bundled together in nifty R class. With this autogenerated assets class, developers could use

Using Fastlane to simplify library release

5 months ago 3 min read Xcode Tooling

Remember when I made a post about Publishing iOS framework made easy? I will try to further simplify the whole process by adding Fastlane to the mix. For our testing ground, we will