Future & functional based programming via JDK compatible extensions for Java 8 and above.

Code Quality Rank: L3
Programming language: Java
License: Apache License 2.0
Latest version: v10.4.0

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Getting Cyclops X (10)

Tutorial :

What's new in Cyclops X (cyclops 10)


  • 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



where x.y.z represents the latest version

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



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


cyclops is licensed under the Apache 2.0 license.


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*Note that all licence references and agreements mentioned in the cyclops-react README section above are relevant to that project's source code only.