Completion handlers are closures, self-contained blocks of functionality that can be passed around and used in your code. They get passed to a function as an argument and then called when that function is done. They are used in iOS when we want to execute an asynchronous job, for example…

In this post, I want to share with you an example of how to mix UIKit and SwiftUI in your projects. For that, I created a small library called CompositionalList. 🧩 CompositionalList is a SwiftUI UIViewControllerRepresentablewrapper powered by UIKit DiffableDataSourceand Compositional Layout. …

Side bars are how we should create a hierarchical navigation system in iPad for non compact mode environments in iOS 14. Ok , but what is actually a side bar? is just a view controller that has a collection view that uses the new side bar appearance list layout. (Don’t…

In this post, we are going to talk about building for the iPad. We are going to use a prototype for Instagram to highlight key topics in how the OS manages its layout system to adapt to different iPad devices and to multitasking environments. Not sure why Instagram is not…

I don’t know you but this year WWDC left me with mixed feelings, on one hand, it made me feel already outdated and on the other, you know 🤯. From Swift UI, to new ways of handling layout in collection views and managing Datasource states, the new features that are…

Well, here we go again, one more time I will like to talk about generics and protocols in Swift 4.2. A few days ago I gave me a small challenge, the goal? implement a client API for SWAPI the “Star Wars API”, made by Paul Hallett, avoiding code repetition as…

If you are an iOS developer you may hear about functional programming in Swift, but what is for real Functional programming? From Wiki… In computer science, functional programming is a programming paradigm — a style of building the structure and elements of computer programs — that treats computation as the…

Its been a while since I wrote “Protocol Based Generic Networking using JSONDecoder and Decodable in Swift 4” on that post I talked about how to use Decodable, protocols and generics to create a reusable networking layer. It worked great but the API was limited to the GET HTTP method…