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https://github.com/aol/cyclops

An advanced, but easy to use, platform for writing functional applications in Java 8.
https://github.com/aol/cyclops

asynchronous collections data-structures functional-programming java java8 monad monad-transformers monoid reactive reactive-streams streams streams-api

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An advanced, but easy to use, platform for writing functional applications in Java 8.

Host: GitHub
URL: https://github.com/aol/cyclops
Owner: aol
License: apache-2.0
Created: 2015-01-20T22:17:32.000Z (almost 10 years ago)
Default Branch: master
Last Pushed: 2023-03-21T11:08:31.000Z (over 1 year ago)
Last Synced: 2024-12-06T13:04:17.245Z (7 days ago)
Topics: asynchronous, collections, data-structures, functional-programming, java, java8, monad, monad-transformers, monoid, reactive, reactive-streams, streams, streams-api
Language: Java
Homepage:
Size: 26.7 MB
Stars: 1,319
Watchers: 100
Forks: 136
Open Issues: 29
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

awesome-java8 - Cyclops - Very modular, so only include what you need. From function exception handling (`try`), to generic monad operations, to pattern matching. Specific integrations to Javaslang, functionaljava, and Guava. :8ball: (Interoperability libraries)

README

# Getting Cyclops X (10)

* The latest version is [cyclops:10.4.0](http://mvnrepository.com/artifact/com.oath.cyclops/cyclops/10.4.0)

* Stackoverflow tag [cyclops-react](http://stackoverflow.com/search?q=cyclops-react)

* [Documentation](https://github.com/aol/cyclops/wiki) (work in progress for Cyclops X)

* [Integration modules](https://github.com/aol/cyclops-integration)

# Tutorial :

* [Dysfunctional programming in Java : A functional tutorial](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-a-functional-tutorial-20e0bebd2ec9)
- [Part 1 : Laziness (Covering Supplier & the Eval monad)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-i-laziness-cc9c6981de39)
- [Part 2 : Immutability (Covering Immutable Objects with Lombok, withers)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-2-immutability-a2cff487c224)
- [Part 3 : Functional Composition (Covering method chaining, Streams, ReactiveSeq, Flux from Reactor)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-3-functional-composition-16828f0609c2)
- [Part 4 : No nulls allowed (Covering class design, Optional, eager / lazy / reactive Option types, Mono from Reactor)](https://blog.usejournal.com/dysfunctional-programming-in-java-4-no-nulls-allowed-88e8735475a)
- [Part 5 : No exceptions (Covering making illegal states unrepresentable, eager / lazy Either type, Try)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-5-no-exceptions-5f37ac594323)
- [Part 6 : No locks or synchronized blocks (Covering Future, Sequence, FutureStreams and reactive-streams)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-6-no-locks-or-synchronized-blocks-ea5a47644689)
- [Part 7 : Immutable Collections (Covering Vector, NonEmptyList and reactive processing)](https://medium.com/@johnmcclean/dysfunctional-programming-in-java-7-immutable-collections-83ba78aaf4dd)

* [Tagless Final in Java](https://medium.com/@johnmcclean/powerful-extensible-code-with-tagless-final-in-java-4094f923cdea)
* [A Java long read : Is functional programming worth it?](https://medium.com/@johnmcclean/a-java-long-read-is-functional-programming-worth-it-ca53bfcd0c6a)

# What's new in Cyclops X (cyclops 10)

![cyclops-data-types](https://user-images.githubusercontent.com/9964792/37656704-b4266d7a-2c40-11e8-84d9-23a4a77e0341.jpeg)

- Fast purely functional datastructures (Vector, Seq / List, LazySeq / LazyList, NonEmptyList, HashSet, TreeSet, TrieSet, HashMap, LinkedMap, MultiMap, TreeMap, BankersQueue, LazyString, Discrete Interval Encoded Tree, Zipper, Range, Tree, DifferenceList, HList, Dependent Map )
- Structural Pattern Matching API (deconstruct algebraic product and sum types)
- Improved type safety via the removal of unsafe APIs
-- E.g. Unlike Optional, Option has no get method (which could throw a null pointer)
-- New data structures do not support operations that would throw exceptions (you can't call head on an empty list for example)
- Eager and Lazy alternatives for most datastructures (Option is eager, Maybe is lazy + reactive)
- Improved naming of types (Function1-8 rather than Fn1-8, Either not Xor)
- Group id is changed to com.oath.cyclops
- Versioning between cyclops-react and cyclops is merged on cyclops versioning scheme (version 10 = Cyclops X)
- Light weight dependencies : reactive-streams API, KindedJ & Agrona
- JVM Polyglot Higher Kinded Types Support with KindedJ

## Modules

* [cyclops](https://github.com/aol/cyclops-react/tree/master/cyclops) - Persistent data structures and control types
* [cyclops-futurestream](https://github.com/aol/cyclops-react/tree/master/cyclops-futurestream) - Parallel asynchronous streaming
* [cyclops-reactive-collections](https://github.com/aol/cyclops-react/tree/master/cyclops-reactive-collections) - Fast, non-blocking, asynchronous extensions for JDK and Persistent Collections
* [cyclops-anyM](https://github.com/aol/cyclops-react/tree/master/cyclops-anym) - Higher kinded abstractions for working with any Java Monad type.
* [cyclops-pure](https://github.com/aol/cyclops-react/tree/master/cyclops-pure) - Higher kinded type classes for pure functional programming in Java
* [cyclops-reactor-integration](https://github.com/aol/cyclops-react/tree/master/cyclops-reactor-integration) - Reactive collections and AnyM integrations with Reactor.
* [cyclops-rxjava2-integration](https://github.com/aol/cyclops-react/tree/master/cyclops-rxjava2-integration) - Reactive collections and AnyM integrations with Rx Java 2.
* [cyclops-jackson-integration](https://github.com/aol/cyclops-react/tree/master/cyclops-jackson) - Jackson databindings for Cyclops persistent data structures and control types.

## Gradle

where x.y.z represents the latest version

```groovy
compile 'com.oath.cyclops:cyclops:x.y.z'
```

## Maven

```xml

com.oath.cyclops
cyclops
x.y.z

```

screen shot 2016-02-22 at 8 44 42 pm

Powerful Streams and functional data types for building modern Java 8 applications. We extend JDK interfaces where possible for maximum integration.

This is the 10.x branch for 2.x branch click the link below

* [2.x](https://github.com/aol/cyclops-react/tree/2.x)
* [1.x](https://github.com/aol/cyclops-react/tree/1.x)

# License

cyclops is licensed under the Apache 2.0 license.

http://www.apache.org/licenses/LICENSE-2.0

# Thanks to our Sponsors

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