RE: [boost] Re: [OBORONA-SPAM] RE: Re: overloads-20050207.tar.gz

From: Alexander Nasonov (alnsn_at_[hidden])
Date: 2005-02-12 12:45:07

David Abrahams wrote:
> "Alexander Nasonov" <alnsn_at_[hidden]> writes:
> > struct Running { /* stateful */ };
> > struct Stopped { /* stateful */ };

> Even more confusing; now you need a dynamic allocation
Why I need it?

> to represent and change the current state of the machine.  I suppose you
> could use variant,
That's one possible representation

> but I never understood why people want to put state _inside_
> of states -- it doesn't match up with the domain abstraction of state
> machines.  The state's identity should be enough.

There are two kinds of state: state of machine and class state. They're from
different domains. Suppose Running state has m_speed member. Is it worth
adding this member to the state identity?

PS: We are ahead of time, boost::fsm review is scheduled on Feb 21 :)

--
Alexander