From: Michael 'entropie' Trommer <mictro@...>
Date: 2006-01-10T03:36:29+09:00
Subject: Re: state pattern?

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Hello Robert,

* Robert Klemme (bob.news@gmx.net) wrote:
> Michael 'entropie' Trommer <mictro@gmail.com> wrote:
> >Hello,
> >
> >I found this State-pattern example on [1], and was interested to
> >find a way to make this more useable for standard classes (not just
> >servers as in the example)
> >
> >I'am not so skilled in OO coding and ruby, so iam interested what you
> >all think. (and is it another implementation of the state pattern or
> >iam on the
> >wrong path?)
>=20
> Hm, I think you probably did not get there completely.  For example the=
=20
> toggle state metchod is typically implemented in the each state class=20
> (every state knows the state that follows him under certain conditions,=
=20
> like a finite state automata distributed across several classes).  Also=
=20
> inheriting TrueClass and FalseClass is generally not a good idea (instanc=
es=20
> of FalseClass's subclass won't be treated as false).

Ok.

> [...]
> Other optimizations are also possible, for example caching state
> instance =20
> if there are a lot state changes and they should be fast.

Thanks much! I will take a deeper look.
This was very helpful.

So long
--
Michael 'entropie' Trommer;  http://ackro.org

ruby -e "0.upto((a=3D'njduspAhnbjm/dpn').size-1){|x| a[x]-=3D1}; p 'mailto:=
'+a"

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