The Composable Architecture (TCA)

This article will discuss a framework that is perfectly suited for creating complex SwiftUI applications — The Composable Architecture (TCA). It will cover its features and advantages, recent developments, considerations when using it, and learning path.

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Introduction to TCA

The Composable Architecture (abbreviated as TCA) allows you to build applications in a unified and easy-to-understand way, taking into account composition, testing, and efficacy. You can use TCA on SwiftUI, UIKit, and other frameworks, and on any of Apple’s platforms (iOS, macOS, tvOS, and watchOS).

TCA provides core tools for building apps for various purposes and complexities. You can follow it step by step to solve many problems you often encounter in daily development, such as:

• State Management Manage the application state with simple value types, and call these states in different interfaces, so that changes within one interface can be immediately reflected in another interface.
• Composition Break down complex functions into small, independently runnable components, and then reassemble them into the original functionality.
• Side Effects Communicate some parts of the app with the outside world in the most testable and understandable way.
• Testing In addition to testing a feature, you can also integrate test it with other features to create more complex features, and use end-to-end testing to understand how side effects affect your application. This ensures that business logic is in line with expectations.