The Apache commons "functor" project:

''"A functor is a function that can be manipulated as an object, or an object representing a single, generic function."''

* http://jakarta.apache.org/commons/sandbox/functor/

* http://www.jroller.com/page/nanneb/#functors_in_java
* http://jroller.com/page/dhall/20050224#functors_in_java_the_rfe

Current status:  Unreleased "sandbox" code.

'' The Java code on the ComplexBagSumInJava page inspired searching for and finding this library.]''

See also: jga = JavaGenericAlgorithms "Generic Algorithms for Java"

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