There are a sufficient number of ways to increase the speed of a project at runtime. Let’s look at the most popular of them: Limiting dynamic dispatch in classes Under the hood, any new class will use dynamic (table) dispatch. This is a price for the ability to be inherited, but if the class is…

In Swift using OperationQueue for asynchronous code may seem like pure hell because, under the hood, Operations are considered complete if the compilation of their synchronous code is completed. In other words, compiling the example described below will output a broken execution order since, by the time the asynchronous code…

Memory management in Swift is based on automatic reference counting (ARC), which means that an object exists in memory as long as there is at least one strong reference to it. …

I continue the series of articles devoted to the use of a protocol-oriented approach when scaling projects with a large code base. If you have not read the previous article, then I strongly recommend that you familiarize yourself with the approaches and conclusions that were made in it. Briefly, a…

Each developer in practice faced the need to make up a screen based on a scrolling list of elements. Or maybe not just one list, but several. It can be horizontal lists, vertical lists, lists with a complex layout. These can be lists with a predetermined size, or with a…

Multipeer Connectivity is an alternative to the common data exchange format. Instead of exchanging data via Wi-Fi or Cellular Network through an intermediate broker, which is usually a backend server, Multipeer Connectivity provides the ability to exchange information between multiply nearby devices without intermediaries. The technology itself for the iPhone…

Protocol-oriented programming is one of the most powerful and flexible tools for competent composition and distribution of responsibility in Swift. In one of the previous articles, protocol-oriented programming was used to manage the state and build a safe sequence of state transitions without additional checks. …

In this article, I would like to show one of the most convenient ways to manage the state of an object using a protocol-oriented approach and generics. This approach is widely used in marketplaces, the banking environment, the service sector, and so on, and assumes that for each state of…

There are a lot of articles about UIViewController lifecycle. Most of them are aimed at remembering the order in which life cycle methods of UIViewController are called and at using this order for UI configuration and request network data This article will not include another interpretation of this sequence, assuming…