Package javautils.fun

Framework for functional objects.

See:
Description

Class Summary

Function	An arbitrary function or procedure.
ObjectToBoolean	Object->boolean function.
ObjectToObject	Object->Object function.
ObjectToObjectToBoolean	Object->Object->boolean function.
ObjectToObjectToObject	Object->Object->Object function.
ObjectToObjectToVoid	Object->Object->void procedure.
ObjectToVoid	Object->void procedure.
VoidToObject	void->Object procedure.
VoidToVoid	void->void procedure.

Package javautils.fun Description

Framework for functional objects.

Representing functions using more complex objects is an instance of the Abstraction Inversion-antipattern [Abstraction Inversion (http://c2.com/cgi/wiki?AbstractionInversion)]. [Note that the antipattern here applies to the design of the Java language and also to the idea that we should build functional abstractions on top of object-oriented abstractions rather than vice versa [Kühne1999].] However, simple functions, rather than more specialized Strategy [Gamma1995] objects, are quite often appropriate for a design and because some OO languages, such as Java, do not provide first class functions, it makes sense to emulate them using the more complex class mechanism.