10

8

6

4

2


8.2

5.1
Functional Java

8.0

8.0
Javaslang

6.4

5.2
jOOλ

5.8

6.2
StreamEx

5.6

9.4
cyclops-react

4.2

5.7
derive4j

10 Functional Programming libraries and projects

  • Functional Java

    8.2 5.1 L5 Java
    Implements numerous basic and advanced programming abstractions that assist composition-oriented development.

  • Javaslang

    8.0 8.0 L3 Java
    Functional component library that provides persistent data types and functional control structures.

  • jOOλ

    6.4 5.2 L2 Java
    Extension to Java 8 which aims to fix gaps in lambda, providing numerous missing types and a rich set of sequential Stream API additions.

  • StreamEx

    5.8 6.2 L3 Java
    Enhancing Java 8 Streams.

  • cyclops-react

    5.6 9.4 L3 Java
    Monad and stream utilities, comprehensions, pattern matching, functional extensions for all JDK collections, future streams, trampolines and much more.

  • derive4j

    4.2 5.7 L4 Java
    Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, morphisms.

  • protonpack

    4.1 3.8 L5 Java
    Collection of stream utilities.

  • underscore-java

    3.5 7.4 L1 Java
    java port of Underscore.js

  • Fugue

    2.7 -
    Functional extensions to Guava.

  • Faux Pas

    2.4 6.1 L5 Java
    Library that simplifies error handling by circumventing the issue that none of the functional interfaces in the Java Runtime is allowed by default to throw checked exceptions.

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