I did not understand how <code>OrderedSet</code> in the new Swift Collections library uses a hash table of array indices for fast lookups, so I read the source code to find out.

Core Data has evolved over the years as one of Apple's most valued frameworks. Within a matter of minutes, a developer can add an object management persistence system that supports a long list of built-in features such as change tracking, undo/redo f...

The Combine framework provides you a bunch of operators to map, filter, and chain asynchronous operations. This week I want to focus on the chaining asynchronous jobs using two main operators that the Combine framework provides us. We will learn how to use…

TextFieldStyle is not officially available yet, can we have a sneak peek at how it might look like?

A quick tip to change the default directory for your Core Data database files when unit testing.

Learn how to colorize grayscale images with CoreML

A story of me spending 1 hour just to remove an UIImageView rounded corners and how it is related to common practices and work attitudes.

Learn how to use result builders and make action sheets more declarative.

Concurrency is the entry point for the most complicated and bizarre bugs a programmer will ever experience. In this article, I'll share my favorite methods of ensuring thread safety, as well as analyzing the performance of the different mechanisms.

In 2015, I sang praises for the guard statement to unwrap optional values in tests. But since then, we were blessed with XCUnwrap, which makes things even better in my book. I received a comment on the ...

Decoupling third-party dependencies from your code into modules for reusability, flexibility, and testability.

The NSDateInterval Object
Somehow, this shiny new object, which was actually introduced in iOS 10, flew past my radar. Today I want to take a few minutes to talk about the NSDateInterval object. This object allows us to quickly calculate the time interval…

Swift Generics 2: Existentials Boogaloo

It’s been just over two years since we first saw “Improving the UI of
generics,” the discussion post abo...

Learn how to create Property Wrappers in Swift. Use the @propertyWrapper to remove boilerplate, improve readability, and clean up code.

What’s the issue with calling UI-related completion handlers on background queues, and how can we ensure that all of our UI updates are performed on the main queue?

This article explains how to do hash functions in swift and is a tutorial for beginners in hash with Swift. Learn Swift cryptography now.

Learn how to leverage UICollectionViewCompositionalLayout to create a spreadsheet-style layout with floating row and column headers in UIKit. Explore step-by-step instructions and code examples for building dynamic grid layouts.

Swift development related blog-posts. Combine, modern concurrency model, Instruments, and more.

Swift development related blog-posts. Combine, modern concurrency model, Instruments, and more.