Re: [boost] [MSM] Compile-time error using SubMachines and events that carries some data

Subject: Re: [boost] [MSM] Compile-time error using SubMachines and events that carries some data
From: Fernando Pelliccioni (fpelliccioni_at_[hidden])
Date: 2013-05-28 10:32:04

On Sun, May 26, 2013 at 5:25 PM, Christophe Henry <
christophe.j.henry_at_[hidden]> wrote:

> ----- Original Message ----- From: "Fernando Pelliccioni" <
> fpelliccioni_at_[hidden]>
> Newsgroups: gmane.comp.lib.boost.devel
> To: <boost_at_[hidden]>
> Sent: Thursday, May 23, 2013 11:24 PM
> Subject: Re: [MSM] Compile-time error using SubMachines and events that
> carries some data
>
>
>
>  Thanks Takatoshi,
>>
>> Seemed odd to me that MSM instantiate a State using a "wrong" Event.
>> I thought I was doing something wrong.
>>
>> The enable_if solution works perfect. :)
>>
>> Thanks and regards,
>> Fernando Pelliccioni
>>
>
> As Takatoshi (thanks a lot!) correctly explains, MSM does not know with
> which event a state will be entered as it's a run-time decision, while
> templates are instantiated at compile-time. I understand the confusion but
> I'm afraid there is not much to do about it :(
>
> Regards,
> Christophe
>
>
>
Thanks Christophe,

As the Transition-Table is a compile-time structure, I thought that States
could only be instantiated using the associated Events in
the Transition-Table.

However, don't worry, the "Concept Overloading Simulation" ( enable_if )
solution of works perfect :)

Thanks and regards,
Fernando.