Functional programming interfaces in Java

Question

Where can I look for a list of Java standard libraries for functional design patterns? I've heard java.util package contain all of data structures, but I can't find the equivalents of functional interfaces in it:

Monoid -> Appendable

Monad -> Flattenable

Functor -> Mapable

Applicative -> Sequencable

Arrow -> Stateful

Lens -> Damnable

There are also Foldable, Traversable, Parser, Pipe and so on.

Where do the function you name come from? I mean Monoid, Appendable and such. Java has some interfaces (docs.oracle.com/javase/8/docs/api/java/util/function/…), but you can define your own with @FunctionalInterface annotation. — Giovanni Lovato
– Giovanni Lovato, Commented Mar 28, 2017 at 7:50

Alexander · Accepted Answer · 2017-03-28 08:01:34Z

2

Try this open source project: https://github.com/functionaljava/functionaljava

"Other Abstractions - monoid, semigroup, natural, random number generator, reader, writer, state, input/output, parser, zipper, specification based testing (quickcheck), actors, optics (lens, prism, fold, traversal and others), concurrency and type conversion."

answered Mar 28, 2017 at 8:01

Alexander

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