Clean Architecture with VIPER Sample Project for UIKit

Architecting applications to meet today’s challenges and be ready for tomorrow’s problem is not an easy feat. The principles of clean architecture may be sound, but separating the signal from the noise is tough. Here is a sample VIPER project for iOS that you can tinker to learn about the principles of clean architecture.

Modeling In-App Purchases Inventory

There are four types of in-app purchases in Apple’s App Store, with their own unique ways to manage it. The challenge is how to isolate the intricacies of these product types from the rest of the application. Otherwise a move from non-consumable in-app purchase to a subscription type would involve a major rewrite. Learn how to manage an app’s inventory of purchases and get the code base resilient to changes in the business side.

How Developers can Draw Icons for iOS Apps

Are you an iOS developer who believes that making icons is purely witchcraft? Perhaps you have an inkling to be able to do some of that wizardry yourself? Here is a step-by-step process on how to create icons for tab bar buttons as well as other glyphs. Techniques that you would find useful for those times when you don’t have access to a good graphic designer.

How to Get Core ML Produce Images as Output

Core ML’s tools to convert other framework’s machine learning models is a pretty awesome feat in itself. However it is by no means complete. I found some issues in converting models which outputs images. Issues which took me a few weeks to solve even after many consultations to Google and Apple’s own forums. But here’s the solution and I’m sharing it with you so that you don’t have to experience the same predicament which I had.

Should You do Free Work to Get Hired?

Have you been asked to do a sample project as part of a hiring process? I’ve done it, not only once but **twice** as part of the same process. Here are those projects. You should be able to learn a thing or two from it Either learn the iOS programming techniques behind these two 40-hour projects or learn how to hunt for purple squirrels.

Speech Timer 2 Lessons Learned

Learn about upgrading your skeuomorphic iOS 6 user interface to iOS 7’s new content-first style, supporting three Apple devices from a single code base, and much more. These are hard lessons learned while I was developing the second version of Speech Timer that you can take advantage of so that you won’t make the same mistakes I did.