In the previous post [https://arturgruchala.com/image-processing-in-swift/], we
touched image processing and rendering. We made UIImage from CIImage with two
filtering effects.

Dynamic filtering
This time we will create a simple app for changing image saturation.…

Learn to use Swift value types to model not only values but also domain entities with identity, to gain efficiency, clarity and testability

Posted by Ian Beer & Samuel Groß of Google Project Zero We want to thank Citizen Lab for sharing a sample of the FORCEDENTRY exploit w...

Swift's high-level semantics try to relieve programmers from thinking about memory management in typical application code. In situations where predictable performance and runtime behavior are needed, though, the variability of ARC and Swift's optimizer have…

Hi all, Here’s a Christmas present for those of you who prefer (or have to) develop Swift packages outside of Xcode - today we’re releasing the initial version of the VSCode Swift extension 🎉 You can find the initial 0.1.0 release on the Visual Studio Marketplace…

Learn Swift coding for iOS with these free tutorials

Apple provides us with a set of different icons available across all the platforms called SF Symbols. SF Symbols package contains more than 3200 icons that we can use to visualize different states and actions in our apps. This week we will learn how to utilize…

Reflection in Swift using the Mirror API allows you to extract metadata for any value during runtime allowing for advanced solutions.

Xcode has a feature to generate code coverage since version 7. Let's see how to enable it and what you can expect from this feature.

Authentication is important to keep your user’s information safe but asking for a username and password every time they land on your app…

Testing background uploads can be tricky. In this post you’ll learn how to force an app out of memory so you can make sure your download continues even when Apple suspends your app.

This article teaches how to Unit Testing UIViewController Dismiss Closure in Swift. Improve your UIViewController unit tests with this!

How a custom SwiftUI button that’s capable of running asynchronous actions can be created, and how to make such a control versatile and easy to reuse across a project.

The Swift Programming Language. Contribute to swiftlang/swift development by creating an account on GitHub.

Delightful code generator for OpenAPI specs. Contribute to CreateAPI/CreateAPI development by creating an account on GitHub.

The what and the why of a Swift precondition helper that accepts statements that can throw recoverable errors.

Swift 5.5 extends the support for the automatic synthesis to enums with associated values. Learn what can be expected from the synthesis code.

A label might seem trivial, but it plays an important role in SwiftUI. Let's learn about this simple view.

Runtime warnings in libraries are a great way to notify your users that something unexpected has happened, or that an API is being used in an incorrect manner. In this post we give an overview of some techniques that can be employed easily today, as well…