It's very likely that you asked yourself at least once in your iOS career what's the difference between a struct and a class. While realistically the choice between using one or another always boils down to value semantics versus reference semantics, the…

Let’s look at a real world use for algebraic data types. We will refactor a data type that is used in the code on this very site so that the invalid states are unrepresentable by the compiler.

Layer blending, misaligned images, and more

Looking for interviews Q&A? Need to find iOS chart, UI library, Swift tips or free courses? Whatever you’re looking you will find that on GitHub…

It's very likely that you asked yourself at least once in your iOS career what's the difference between a struct and a class. While realistically the choice between using one or another always boils down to value semantics versus reference semantics, the…

Disclaimer: check comments to this article before reading. Ilya Puchka found the better solution as a workaround.

Posted by the Swift for TensorFlow team at Google

I’m working on an app that lets users select a bunch of photos, upload and share them with other users. Sounds simple enough: user selects photos, app uploads photos, user shares the album. More…

How do I return data from URLSession dataTask ? Why do I get nil when I return the data from URLSession dataTask? I confirm that the json is retrieved! Why do I get error unexpectedly found nil while unwrapping an Optional value when I return the data? Wtf…

Closures are very common in Swift, you might have used it before on Alamofire / URLSession call like this : // {response in ... } is the closure Alamofire.request("https://httpbin.org/get?users").validate().responseJSON { response in // parse the json…

Let say you have two different network call function, one to get list of users and one to get list of avatars : // Get List of Users Alamofire.request("https://httpbin.org/get?users").validate().responseJSON { response in switch response.result { …

This maintains proposals for changes and user-visible enhancements to the Swift Programming Language. - apple/swift-evolution

Group Parameters into Separate Types

In this tutorial, you will explore Dependency Injection (DI) through Swinject, a Dependency Injection framework written in Swift. Dependency Injection is an approach to organizing code so that its dependencies are provided by a different object, instead of…