RxSwift alternatives and similar libraries
Based on the "Events" category.
Alternatively, view RxSwift alternatives based on common mentions on social networks and blogs.
-
OpenCombine
Open source implementation of Apple's Combine framework for processing values over time. -
Tokamak
DISCONTINUED. SwiftUI-compatible framework for building browser apps with WebAssembly and native apps for other platforms [Moved to: https://github.com/TokamakUI/Tokamak] -
Katana
DISCONTINUED. Swift Apps in a Swoosh! A modern framework for creating iOS apps, inspired by Redux. -
VueFlux
:recycle: Unidirectional State Management Architecture for Swift - Inspired by Vuex and Flux -
RxReduce
DISCONTINUED. Reactive implementation of the state container pattern (like Redux). It is based on the simple concepts of state immutability and unidirectionnal data flow. -
LightweightObservable
π¬ A lightweight implementation of an observable sequence that you can subscribe to. -
TopicEventBus
Publishβsubscribe design pattern implementation framework, with an ability to publish events by topic. -
Causality
A simple thread-safe, in-memory bus for Swift that supports fully-typed Events and States.
CodeRabbit: AI Code Reviews for Developers
* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest.
Do you think we are missing an alternative of RxSwift or a related project?
README
Rx is a generic abstraction of computation expressed through Observable<Element>
interface, which lets you broadcast and subscribe to values and other events from an Observable
stream.
RxSwift is the Swift-specific implementation of the Reactive Extensions standard.
While this version aims to stay true to the original spirit and naming conventions of Rx, this project also aims to provide a true Swift-first API for Rx APIs.
Cross platform documentation can be found on ReactiveX.io.
Like other Rx implementations, RxSwift's intention is to enable easy composition of asynchronous operations and streams of data in the form of Observable
objects and a suite of methods to transform and compose these pieces of asynchronous work.
KVO observation, async operations, UI Events and other streams of data are all unified under [abstraction of sequence](Documentation/GettingStarted.md#observables-aka-sequences). This is the reason why Rx is so simple, elegant and powerful.
I came here because I want to ...
- [why use rx?](Documentation/Why.md)
- [the basics, getting started with RxSwift](Documentation/GettingStarted.md)
- [traits](Documentation/Traits.md) - what are
Single
,Completable
,Maybe
,Driver
, andControlProperty
... and why do they exist? - [testing](Documentation/UnitTests.md)
- [tips and common errors](Documentation/Tips.md)
- [debugging](Documentation/GettingStarted.md#debugging)
- [the math behind Rx](Documentation/MathBehindRx.md)
- [what are hot and cold observable sequences?](Documentation/HotAndColdObservables.md)
- Integrate RxSwift/RxCocoa with my app. Installation Guide
- with the example app. [Running Example App](Documentation/ExampleApp.md)
- with operators in playgrounds. [Playgrounds](Documentation/Playgrounds.md)
- All of this is great, but it would be nice to talk with other people using RxSwift and exchange experiences. Join Slack Channel
- Report a problem using the library. [Open an Issue With Bug Template](.github/ISSUE_TEMPLATE.md)
- Request a new feature. [Open an Issue With Feature Request Template](Documentation/NewFeatureRequestTemplate.md)
- Help out [Check out contribution guide](CONTRIBUTING.md)
- [with Combine and ReactiveSwift](Documentation/ComparisonWithOtherLibraries.md).
RxSwift is as compositional as the asynchronous work it drives. The core unit is RxSwift itself, while other dependencies can be added for UI Work, testing, and more.
It comprises five separate components depending on each other in the following way:
ββββββββββββββββ ββββββββββββββββ
β RxCocoa ββββββΆ RxRelay β
βββββββββ¬βββββββ ββββββββ¬ββββββββ
β β
βββββββββΌβββββββββββββββββββΌββββββββ
β RxSwift β
βββββββββ²βββββββββββββββββββ²ββββββββ
β β
βββββββββ΄βββββββ ββββββββ΄ββββββββ
β RxTest β β RxBlocking β
ββββββββββββββββ ββββββββββββββββ
- RxSwift: The core of RxSwift, providing the Rx standard as (mostly) defined by ReactiveX. It has no other dependencies.
- RxCocoa: Provides Cocoa-specific capabilities for general iOS/macOS/watchOS & tvOS app development, such as Shared Sequences, Traits, and much more. It depends on both
RxSwift
andRxRelay
. - RxRelay: Provides
PublishRelay
,BehaviorRelay
andReplayRelay
, three simple wrappers around Subjects. It depends onRxSwift
. - RxTest and RxBlocking: Provides testing capabilities for Rx-based systems. It depends on
RxSwift
.
Usage
Here's an example In Action Define search for GitHub repositories ... let searchResults = searchBar.rx.text.orEmpty .throttle(.milliseconds(300), scheduler: MainScheduler.instance) .distinctUntilChanged() .flatMapLatest { query -> Observable<[Repository]> in if query.isEmpty { return .just([]) } return searchGitHub(query) .catchAndReturn([]) } .observe(on: MainScheduler.instance) ... then bind the results to your tableview searchResults .bind(to: tableView.rx.items(cellIdentifier: "Cell")) { (index, repository: Repository, cell) in cell.textLabel?.text = repository.name cell.detailTextLabel?.text = repository.url } .disposed(by: disposeBag)
Requirements
- Xcode 12.x
- Swift 5.x
For Xcode 11 and below, use RxSwift 5.x.
Installation
RxSwift doesn't contain any external dependencies.
These are currently the supported installation options:
Manual
Open Rx.xcworkspace, choose RxExample
and hit run. This method will build everything and run the sample app
CocoaPods
# Podfile
use_frameworks!
target 'YOUR_TARGET_NAME' do
pod 'RxSwift', '6.5.0'
pod 'RxCocoa', '6.5.0'
end
# RxTest and RxBlocking make the most sense in the context of unit/integration tests
target 'YOUR_TESTING_TARGET' do
pod 'RxBlocking', '6.5.0'
pod 'RxTest', '6.5.0'
end
Replace YOUR_TARGET_NAME
and then, in the Podfile
directory, type:
$ pod install
XCFrameworks
Each release starting with RxSwift 6 includes *.xcframework
framework binaries.
Simply drag the needed framework binaries to your Frameworks, Libraries, and Embedded Content section under your target's General tab.
Note: If you're using
RxCocoa
, be sure to also drag RxCocoaRuntime.xcframework before importingRxCocoa
.
Carthage
Add this to Cartfile
github "ReactiveX/RxSwift" "6.5.0"
$ carthage update
Carthage as a Static Library
Carthage defaults to building RxSwift as a Dynamic Library.
If you wish to build RxSwift as a Static Library using Carthage you may use the script below to manually modify the framework type before building with Carthage:
carthage update RxSwift --platform iOS --no-build
sed -i -e 's/MACH_O_TYPE = mh_dylib/MACH_O_TYPE = staticlib/g' Carthage/Checkouts/RxSwift/Rx.xcodeproj/project.pbxproj
carthage build RxSwift --platform iOS
Swift Package Manager
Note: There is a critical cross-dependency bug affecting many projects including RxSwift in Swift Package Manager. We've filed a bug (SR-12303) in early 2020 but have no answer yet. Your mileage may vary. A partial workaround can be found here.
Create a Package.swift
file.
// swift-tools-version:5.0
import PackageDescription
let package = Package(
name: "RxTestProject",
dependencies: [
.package(url: "https://github.com/ReactiveX/RxSwift.git", .exact("6.5.0"))
],
targets: [
.target(name: "RxTestProject", dependencies: ["RxSwift", "RxCocoa"])
]
)
$ swift build
To build or test a module with RxTest dependency, set TEST=1
.
$ TEST=1 swift test
Manually using git submodules
- Add RxSwift as a submodule
$ git submodule add [email protected]:ReactiveX/RxSwift.git
- Drag
Rx.xcodeproj
into Project Navigator - Go to
Project > Targets > Build Phases > Link Binary With Libraries
, click+
and selectRxSwift
,RxCocoa
andRxRelay
targets
References
- http://reactivex.io/
- Reactive Extensions GitHub (GitHub)
- RxSwift RayWenderlich.com Book
- RxSwift: Debunking the myth of hard (YouTube)
- Boxue.io RxSwift Online Course (Chinese π¨π³)
- Expert to Expert: Brian Beckman and Erik Meijer - Inside the .NET Reactive Framework (Rx) (video)
- Reactive Programming Overview (Jafar Husain from Netflix)
- Subject/Observer is Dual to Iterator (paper)
- Rx standard sequence operators visualized (visualization tool)
- Haskell