Usually, we have two kinds of volume: one is the system audio output volume, which will display when you tap volume up/down buttons on the…

We use Swift's pointer APIs to read a text file and split it into lines without using Swift's collection and string types.

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You might be wondering what are throwable optionals. It's simply an optional that will throw when force unwrapping. Throwable optionals don't exist in the swift standard library. In this blog article we'll create them and we'll create a custom operator for…

One of the biggest advantages of a strong type system is that carefully chosen types can make illegal states unrepresentable in your programs. Many Cocoa APIs don’t take full advantage of this because they aren’t optimized for Swift.

Short summary

We're going to talk in-depth about protocol-oriented programming (POP) using Swift and answer a question: Is POP is better than Object oriented programming?

Writing a Network Layer in Swift: Protocol-Oriented Approach In this guide we’ll look at how to implement a network layer in pure Swift without any third-party libraries. Lets’ jump straight to …

Synthesized equatable, conditional conformance, and more!

(Northern Mockingbird. Public domain.) Lots of people use the terms

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In this post, I explain how to extend Swift to make our own type-safe way of handling data coming from an API.

Need to set up routing for your iOS app? We’ll learn how to use Compass to create scalable routing on the real-world example. Let’s get started!

With iOS 11.3, Apple has silently added support for the basic set of new technologies behind the idea of “Progressive Web Apps” (PWAs)…

When people "refactor without tests," they're going against basic principles. Let's look refactoring principles through an example.

In this tutorial, you’ll set up an IBM Watson account, then train a custom visual recognition Watson service model, and set up an iOS app to use the exported Core ML model.

A case for careful force unwrapping