iOS App Mastery

MetalKit: Your App’s Performance with GPU Acceleration

For developers seeking to push the boundaries of performance in their iOS and macOS applications, MetalKit stands as a pivotal tool. This framework, building upon Apple’s Metal, simplifies the integration of GPU-powered graphics and…

Using Core Data In-Memory Store

An in-memory Core Data store operates directly within the app’s memory (RAM), providing a swift and efficient way to access and manage data. As the data resides only in memory, it’s transient and disappears when the app is terminated or the memory store is cleared. This…

Preventing Image Flickering in iOS Table Views and Collection Views: Best Practices for Cell Reuse

“Image Flickering” or “Cell Reuse Bug,” occurs when you scroll a UITableView or UICollectionView rapidly, and you see the image from one cell appearing in another…

Debounce & Throttle with Combine

Both throttle and debounce are operators that can be used for handling rapid changes or updates in values. However, they differ in how they handle the timing of emitting values.

Throttle:

Running Automated Tests via CI Pipelines: GitHub Actions

When it comes to testing, end-to-end tests may not provide immediate feedback compared to unit tests. However, by incorporating a solution that runs both unit and end-to-end tests through an automated continuous integration (CI)…

The Economics of End-to-End vs. Unit Testing

When it comes to iOS testing, automation tools are often a topic of heated debate among developers. Yet, stepping away from the technical back-and-forth, it’s the business perspective that frequently tips the scales. In the world of commerce, economics…

SOLID in the Real World: Everyday iOS App Development

Using Thread Sanitizer in Tests: Solving Data Races in Concurrency and Multithreading

Data Races

Data races in concurrent programming occur when multiple threads access the same memory location without proper synchronization, leading to…

Composition Layer

Let’s say you have two services: a remote service that fetches data from a server, and a local service that retrieves data from…