FunctionalRx2 is a collection of constructs to simplify a functional programming approach to Java and Android
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


FunctionalRx2 is a collection of constructs to simplify a functional programming approach to development on Java and Android.

Android Arsenal

For the RxJava 1.X version please go to FunctionalRx.


The base Java 7 framework does not contain most constructs to do even the simplest functional development. Given that functional programming is a paradigm that's not limited by languages, a series of libraries have been created to bridge some of the gap to others like Kotlin, Scala or Clojure.

FunctionalRx uses RxJava as a backend for their functions and helpers. It's meant to be used in combination with their rective streams.


An overview of the libraries can be read at Building a Functional Toolset on Android on my blog. If you want to see them in action, watch my presentation on Fully Reactive Apps or visit the FunctionalAndroidReference sample project.

A thorough description and examples of each construct can be found in the readme of their repositories:

RxTuples2 - Simple tuples to use with RxJava

RxSealedUnions2 - Tagged Unions for the RxJava aesthete

RxComprehensions - Reduce boilerplate in RxJava by abstracting chained flatMaps, concatMaps and switchMaps

RxPartialApplication2 - Simple partial application for FunctionN and ConsumerN on RxJava

RxCurrying2 - Simple currying for FuncN and ActionN on RxJava

RxConsumers - Simple ConsumerN composition to use with RxJava

RxFunctions2 - Advanced Function composition to use with RxJava

RxMemoization2 - Simple Function result caching for RxJava


Each library can be added individually, or as a group by adding FunctionalRx2.

Add as a dependency to your build.gradle

repositories {
    maven { url "" }
dependencies {
    compile 'com.github.pakoito:FunctionalRx2:1.1.0'

    // This version includes:
    // compile 'com.github.pakoito:RxTuples2:1.0.0'
    // compile 'com.github.pakoito:RxSealedUnions2:1.0.0'
    // compile 'com.github.pakoito.RxComprehensions:rxcomprehensions2:1.3.0'
    // compile 'com.github.pakoito:RxMemoization2:1.0.0'
    // compile 'com.github.pakoito:RxPartialApplication2:1.0.0'
    // compile 'com.github.pakoito:RxCurrying2:1.0.0'
    // compile 'com.github.pakoito:RxFunctions2:1.0.0'
    // compile 'com.github.pakoito:RxConsumers:1.0.0'

or to your pom.xml




Copyright (c) pakoito 2017

The Apache Software License, Version 2.0