RxCurrying is a library to allow currying on RxJava function primitives.

For the RxJava 2.X version, please go to RxCurrying2.

RxCurrying contains two classes, RxCurryingAction and RxCurryingFunc. Each contains a set of curry() methods to do split any function into its curried version. Curried methods allows calling them one parameter at a time, and execute them at the end. For example, a Func3<A, B, C, R> becomes a Func1<A, Func1<B, Func1<C, R>>>, or an Action4<A, B, C, D> becomes Func1<A, Func1<B, Func1<C, Action1<D>>>.

Function to print the sum of two numbers:

Func1<Integer, Action1<Integer>> adder = RxCurryingAction.curry((int first, int second) -> { System.out.print(first   second); });
Action1<Integer> intermediate = adder.call(3);
intermediate.call(2);  // prints 5

Append 5 strings:

Func1<String, Func1<String, Func1<String, Func1<String, Func1<String, String>>>>> appender = RxCurryingFunc.curry((String first, String second, String third, String fourth, String fifth) -> { return first   second   third   fourth   fifth; );
Func1<String, String> intermediate = appender.call("Hello ").call("This ").call("Is ").call("Curried ");
String value = last.call("Func"); // value == "Hello This is Curried Func"

Add as a dependency to your build.gradle

repositories {
    ...
    maven { url "https://jitpack.io" }
    ...
}

dependencies {
    ...
    compile 'com.github.pakoito:RxCurrying:1.1.0'
    ...
}

or to your pom.xml

<repositories>
    <repository>
        <id>jitpack.io</id>
        <url>https://jitpack.io</url>
    </repository>
</repositories>

<dependency>
    <groupId>com.github.pakoito</groupId>
    <artifactId>RxCurrying</artifactId>
    <version>1.1.0</version>
</dependency>

Copyright (c) pakoito 2016

The Apache Software License, Version 2.0

See LICENSE.md