[erlang-questions] Erlang modelling question
Sun Jun 24 23:52:12 CEST 2007
Yes, this was what I was thinking at, at least at first.
4 cases of incoming messages : two types of requests (regular or oneway,
hence with the sender PID or not), with or without parameters (with an
atom to discriminate ambiguous cases if needed), and between 0 and n
"default handlers" in case this per-class handler does not specify what
to do. Default handlers could be seen by POO-fans as superclasses.
Actually such a full-blown solution could be almost found from various
But at first I will (try to) keep it simpler, just to know if it may be
worth the trouble doing so !
Thanks for your help,
Val Functor a écrit :
> On 6/23/07, *Olivier Boudeville* <olivier.boudeville@REDACTED
> <mailto:olivier.boudeville@REDACTED>> wrote:
> How such a problem could be mapped into Erlang concepts ? How
> would you
> model the situation, knowing that each creature can live, move and
> that mammals are indeed specialized creatures that have backbones, and
> that dogs are specialized mammals with four legs and a tail ?
> What I would like is to avoid the developer having to hardcode by
> himself the implied inheritance between actors : when adding a cat in
> the simulation, I would like to specify 1. it is a specialized
> 2. what are its specific traits, but not that a cat has a backbone and
> it can live, move and die.
> A cat is a modeled by a process.
> A cat can only: receive messages, to which it can only either reply or
> If it knows how to reply to a message it does so.
> If it does not know, but knows of some other process who could know,
> it forwards the incoming message there and the reply, if any, to the
> original requester.
> If it does not know, and does not know who else to ask, it either does
> not reply or it does reply 'i do not know'.
> The creator of the cat would pass it knowledge about where to send
> messages it does not know how to handle
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