Functional Java Tuples

Just a prototype so far:

https://github.com/claudemartin/FunctionalJavaTuples

The generic types of the arguments are always A, B, C, etc. The result is of generic type R.

It’s my goal to have three forms:

• Method/Lambda Form: Takes n arguments
• Curried Form: Methods are chained A -> B -> C -> ... -> R
• Uncurried Form: Takes a tuple (A,B,C,...) -> R

The idea is to add all the basic functions of Haskell to a project that then uses javatuples.org to have a way of using tuples for functional programming in Java 8.

• curry / uncurry
• zip / unzip
• composition (“.”-operator in Haskell)
• pipes (“|>” in F#)
• partial application
• fn.arity() returns the arity of the function.
• Convert Suppliers and Consumers to Functions.

There’s still a lot to do…

List of TODOs:

• Implementations of Fn for Quad ... Decade
• Unit-Tests (instead of FunctionalDemo.java)
• Types Curried and Uncurried for such forms of the methods

Contact me on github if you are interested in this project.