A lightweight observables framework for Swift with disposer-based memory management and basic operators.
Snail is a lightweight observables framework for Swift that enables reactive programming by creating observable data streams and managing subscriptions. It solves the problem of handling asynchronous events and state changes in iOS apps with a simple API and built-in memory management via disposers.
iOS developers building reactive UIs, especially those using MVVM architectures who need a simple observables solution without the overhead of larger frameworks.
Developers choose Snail for its minimal API, integrated disposer-based memory management, and direct UIKit support, making it easier to adopt reactive patterns in Swift projects.
An observables framework for Swift
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
The disposer automatically cleans up subscriptions when deinitialized, reducing manual memory management overhead, as detailed in the disposer section.
Provides direct subscriptions to control events, gestures, and bar button taps, simplifying reactive UI handling in UIKit-based apps, as shown in the examples.
Allows specifying dispatch queues for observer notifications, including synchronous main queue handling, ensuring predictable UI updates, as explained in the queues section.
Focuses on essential operators like map, filter, and flatMap, making it easier to learn and adopt compared to heavier frameworks, aligning with its philosophy of simplicity.
Only includes basic operators (map, filter, flatMap), missing common reactive patterns like debounce or throttle, which forces manual implementation for advanced scenarios.
The disposer doesn't prevent retain cycles; developers must manually use [weak self] in closures, as admitted in the README, increasing cognitive load and potential for memory leaks.
Tailored for UIKit with no mentioned integration for SwiftUI, limiting its relevance in modern iOS development where SwiftUI is increasingly adopted.