Hi all,
After reading "Blocks in Java", I'm pretty sure that Functors/closures are useful in
certain instances. I'm unfamiliar with the topic, however, and would like to gain a
sense of in what scenarios they are best used. In the use of collections / iterators,
and in the serialization of algorithms (command pattern), the applicaton of Functors
seems clear to me. Are there other common application areas?
For example, what about event mechanisms? Some languages use method pointers for
this purpose. Is there any sense in using Functors as event listeners? I'm
considering making a sort of universal adapter that would adapt a given functor to any
of the event listener interfaces. Does this make sense? Has anyone tried using
(java) Functors in an event-based system (GUI)?
Additionally, what about combining Functors with reflection? To invoke a method
using reflection, one needs the object to act on and the name of the method to invoke.
This state can be stored in a proxy object, but perhaps a Functor / closure is a good
choice for this? Doing so would allow any object to be adapted to a (set of)
Functor(s) at Runtime. Similarly, interception, logging, etc., could be provided by a
chain of Functors.
I hope my questions aren't too newbieish ;) Thanks for creating an interesting
project.
BTW, I origionally sent this message to commons-user, but got no response.
- Matt Munz
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