Latest 5.0.0
Homepage https://github.com/ReactiveX/RxSwift
License MIT
Platforms ios 8.0, osx 10.9, watchos 3.0, tvos 9.0, requires ARC
Authors

Miss Electric Eel 2016 RxSwift: ReactiveX for Swift

Travis CI platforms pod Carthage compatible Swift Package Manager compatible

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
… understand the structure

RxSwift comprises five separate components depending on eachother in the following way:

┌──────────────┐    ┌──────────────┐
│   RxCocoa    ├────▶   RxRelay    │
└───────┬──────┘    └──────┬───────┘
        │                  │        
┌───────▼──────────────────▼───────┐
│             RxSwift              │
└───────▲──────────────────▲───────┘
        │                  │        
┌───────┴──────┐    ┌──────┴───────┐
│    RxTest    │    │  RxBlocking  │
└──────────────┘    └──────────────┘
  • 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 Binders, Traits, and much more. It depends on both RxSwift and RxRelay.
  • RxRelay: Provides PublishRelay and BehaviorRelay, two simple wrappers around Subjects. It depends on RxSwift.
  • RxTest and RxBlocking: Provides testing capabilities for Rx-based systems. It depends on RxSwift.
… 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.

Usage

Here’s an example In Action
Define search for GitHub repositories … RxSwift
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)
            .catchErrorJustReturn([])
    }
    .observeOn(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 10.2
  • Swift 5.0

For Xcode 10.1 and below, use RxSwift 4.5.

Installation

Rx doesn’t contain any external dependencies.

These are currently the supported 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', '~> 5'
    pod 'RxCocoa', '~> 5'
end

# RxTest and RxBlocking make the most sense in the context of unit/integration tests
target 'YOUR_TESTING_TARGET' do
    pod 'RxBlocking', '~> 5'
    pod 'RxTest', '~> 5'
end

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

$ pod install

Carthage

Officially supported: Carthage 0.33 and up.

Add this to Cartfile

github "ReactiveX/RxSwift" ~> 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 RxAlamofire --platform iOS

Swift Package Manager

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", from: "5.0.0")
  ],
  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 select RxSwift-[Platform] and RxCocoa-[Platform] targets

References

Latest podspec

{
    "name": "RxSwift",
    "version": "5.0.0",
    "summary": "RxSwift is a Swift implementation of Reactive Extensions",
    "description": "This is a Swift port of [ReactiveX.io](https://github.com/ReactiveX)nnLike the original [Rx](https://github.com/Reactive-extensions/Rx.Net), its intention is to enable easy composition of asynchronous operations and event streams.nnIt tries to port as many concepts from the original Rx as possible, but some concepts were adapted for more pleasant and performant integration with iOS/macOS/Linux environment.nnProbably the best analogy for those who have never heard of Rx would be:nn```ngit diff | grep bug | less          #  linux pipes - programs communicate by sendingntttt    #  sequences of bytes, words, lines, 'u0000' terminated strings...n```nwould become if written in RxSwiftn```ngitDiff().grep("bug").less          // sequences of swift objectsn```",
    "homepage": "https://github.com/ReactiveX/RxSwift",
    "license": "MIT",
    "authors": {
        "Krunoslav Zaher": "[email protected]"
    },
    "source": {
        "git": "https://github.com/ReactiveX/RxSwift.git",
        "tag": "5.0.0"
    },
    "requires_arc": true,
    "platforms": {
        "ios": "8.0",
        "osx": "10.9",
        "watchos": "3.0",
        "tvos": "9.0"
    },
    "source_files": [
        "RxSwift/**/*.swift",
        "Platform/**/*.swift"
    ],
    "exclude_files": "RxSwift/Platform/**/*.swift",
    "swift_versions": "5.0"
}

Pin It on Pinterest

Share This