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Latest commit 78daf34 Feb 16, 2017 @kzaher kzaher [Fix] Slack legacy URL.
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.github [Fix] Slack legacy URL. Feb 16, 2017
Documentation Documentation improvements. Feb 9, 2017
Platform Adds additional resource cleanup tests. Feb 5, 2017
Preprocessor Adds unit test to ensure sequence resources will be cleaned on termin… Jan 1, 2017
Rx.playground Removes unnecessary `import Foundation` statements. Jan 29, 2017
Rx.xcodeproj Add AsyncSubject tests Feb 2, 2017
Rx.xcworkspace [Fix] Removes API reference. Dec 27, 2016
RxBlocking Release 3.2.0 Jan 30, 2017
RxCocoa Add UIButton’s reactive wrapper for `setAttributedTitle(_:controlStat… Feb 13, 2017
RxExample Code review fixes Feb 14, 2017
RxSwift Fix timeout error documentation Feb 14, 2017
RxTest Subjects polish. Feb 5, 2017
Sources Adds `onSubscribed` to `do` operator. Feb 12, 2017
Tests Add UIButton’s reactive wrapper for `setAttributedTitle(_:controlStat… Feb 13, 2017
assets Adds proper attribution to Rx Logo and license (at least I think it d… May 19, 2015
scripts Adds additional resource cleanup tests. Feb 5, 2017
.gitignore RxSwift compiles first time on Linux. Dec 26, 2015
.jazzy.yml Update jazzy Feb 2, 2017
.swift-version Adds `.swift-version`. Oct 20, 2016
.travis.yml Hopefully improves Travis stability. Oct 30, 2016
CHANGELOG.md Update changelog Feb 2, 2017
CODE_OF_CONDUCT.md Fixes contact info. May 21, 2016
CONTRIBUTING.md Improves CONTRIBUTING.md Jun 26, 2016
Dangerfile Adds `swift-3.0` as valid branch in Dangerfile. Jul 10, 2016
Gemfile Danger base setup Jun 3, 2016
Gemfile.lock Danger base setup Jun 3, 2016
LICENSE.md Standardizes header format. Dec 29, 2015
Package.swift Removes RxTest from OSX + SPM until real XCTest support on OSX. Oct 22, 2016
README.md Add syntax highlighting to README Feb 13, 2017
RxBlocking.podspec Release 3.2.0 Jan 30, 2017
RxCocoa.podspec Release 3.2.0 Jan 30, 2017
RxSwift.podspec Release 3.2.0 Jan 30, 2017
RxTest.podspec Release 3.2.0 Jan 30, 2017


Miss Electric Eel 2016 RxSwift: ReactiveX for Swift

Travis CI platforms pod Carthage compatible Swift Package Manager compatible

About Rx

⚠️ This readme describes RxSwift 3.0 version that requires Swift 3.0.

⚠️ If you are looking for Swift 2.3 compatible version, please take a look at RxSwift ~> 2.0 versions and swift-2.3 branch.

Rx is a generic abstraction of computation expressed through Observable<Element> interface.

This is a Swift version of Rx.

It tries to port as many concepts from the original version as possible, but some concepts were adapted for more pleasant and performant integration with iOS/macOS environment.

Cross platform documentation can be found on ReactiveX.io.

Like the original Rx, its intention is to enable easy composition of asynchronous operations and event/data streams.

KVO observing, async operations and streams are all unified under abstraction of sequence. This is the reason why Rx is so simple, elegant and powerful.

I came here because I want to ...

... understand
... install
... hack around
... interact
... compare
... find compatible
... see the broader vision
  • Does this exist for Android? RxJava
  • Where is all of this going, what is the future, what about reactive architectures, how do you design entire apps this way? Cycle.js - this is javascript, but RxJS is javascript version of Rx.


Here's an example In Action
Define search for GitHub repositories ...
let searchResults = searchBar.rx.text.orEmpty
    .throttle(0.3, scheduler: MainScheduler.instance)
    .flatMapLatest { query -> Observable<[Repository]> in
        if query.isEmpty {
            return .just([])

        return searchGitHub(query)
... then bind the results to your tableview
    .bindTo(tableView.rx.items(cellIdentifier: "Cell")) {
        (index, repository: Repository, cell) in
        cell.textLabel?.text = repository.name
        cell.detailTextLabel?.text = repository.url
    .disposed(by: disposeBag)


  • Xcode 8.0
  • Swift 3.0


Rx doesn't contain any external dependencies.

These are currently the supported options:


Open Rx.xcworkspace, choose RxExample and hit run. This method will build everything and run the sample app


Tested with pod --version: 1.1.1

# Podfile

target 'YOUR_TARGET_NAME' do
    pod 'RxSwift',    '~> 3.0'
    pod 'RxCocoa',    '~> 3.0'

# RxTests and RxBlocking make the most sense in the context of unit/integration tests
    pod 'RxBlocking', '~> 3.0'
    pod 'RxTest',     '~> 3.0'

Replace YOUR_TARGET_NAME and then, in the Podfile directory, type:

$ pod install


Tested with carthage version: 0.18.1

Add this to Cartfile

github "ReactiveX/RxSwift" ~> 3.0
$ carthage update

Swift Package Manager

Tested with swift build --version: 3.0.0 (swiftpm-19)

Create a Package.swift file.

import PackageDescription

let package = Package(
    name: "RxTestProject",
    targets: [],
    dependencies: [
        .Package(url: "https://github.com/ReactiveX/RxSwift.git", majorVersion: 3)
$ swift build

Manually using git submodules

  • Add RxSwift as a submodule
$ git submodule add git@github.com:ReactiveX/RxSwift.git
  • Drag Rx.xcodeproj into Project Navigator
  • Go to Project > Targets > Build Phases > Link Binary With Libraries, click + and select RxSwift-[Platform] and RxCocoa-[Platform] targets