https://github.com/pakoito/rxtuples

Simple tuples to use with RxJava [STABLE]
https://github.com/pakoito/rxtuples

android functional-programming java

Last synced: 7 days ago
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Simple tuples to use with RxJava [STABLE]

• Host: GitHub
• URL: https://github.com/pakoito/rxtuples
• Owner: pakoito
• License: other
• Created: 2015-12-07T22:04:18.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2017-03-22T00:07:44.000Z (over 7 years ago)
• Last Synced: 2024-11-01T01:24:25.057Z (14 days ago)
• Topics: android, functional-programming, java
• Language: Java
• Homepage:
• Size: 97.7 KB
• Stars: 112
• Watchers: 7
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# RxTuples

RxTuples is a library to smooth RxJava usage by adding simple Tuple creation functions.

For the RxJava 2.X version, please go to [RxTuples2](https://github.com/pakoito/RxTuples2).

## Rationale

Quite often when using RxJava you find the need to forward a value alongside the result of an operation, combine several values, or simply adding an external value to the current internal state of the chain. For this you either create ad-hoc types that may only be used locally, which is inefficient.

Other languages have the concept of a Tuple built into them, which is an in-place list of values. Lots of Java libraries implement their own concept of Tuple, being a Pair, a Point, or VecX types. This library uses [javatuples](http://www.javatuples.org/) in an attempt to unify them[.](https://imgs.xkcd.com/comics/standards.png) Javatuples are all "typesafe, immutable, iterable, serializable, comparable" classes  ranging from 1 to 10 elements.

## Usage

RxTuples come as lazily evaluated FuncN and its main use case is alongside the combineLatest, withLatestFrom, zip, and zipWith operators.

Zip a list element into a pair with their position:

    Observable.zip(Observable.from(myStringList), Observable.range(0, myStringList.size()), 

                   RxTuples.toPair());

Merge the value of several hot observables:

    Observable.combineLatest(networkSubject(), bluetoothSubject(), compassSubject(), 

                             RxTuples.toTriplet());

Get the previous element from a sequence alongside the current one:

    Observable.zip(compassSubject(), compassSubject().skip(1), 

                   RxTuples.toPair());

or more complicated cases

    Observable.just(Quintet.with(1, 2, 3, 4, 5))

              .zipWith(

                    Observable.just(Triplet.with(6, 7, 8)),

                    RxTuples. toOctetFromQuintet());

## Distribution

Add as a dependency to your `build.gradle`

    repositories {

        ...

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

        ...

    }

    

    dependencies {

        ...

        compile 'com.github.pakoito:RxTuples:1.0.+'

        ...

    }

or to your `pom.xml`

    

        

            jitpack.io

            https://jitpack.io

        

    

    

    

        com.github.pakoito

        RxTuples

        1.0.0

    

## License

Copyright (c) pakoito 2015

The Apache Software License, Version 2.0

See LICENSE.md