Re: [Boost-users] Serialization of functors and MPL

19 Sep 2010

      Hello,

Thanks for the response.

Actually, I need to create dynamically functor, because I call a lot of
different methods coming from several classes.
see below:

MyObject myObject("before");
SetCommandstd::string,MyObject
cmd(myObject,&MyObject::setName,&MyObject::getName,"after");

Thus, I'm wondering if it is not possible to use the MPL library to
register the link between a class and it functor.
Example:

template
class SetCommand
{

typedef mpl::pair::type �container;

template<class Functor>
SetCommand()
{
typedef mpl::insert::type myType;
}

};

serialize()

{

boost::function getter=mpl::at< container,MyObject>::type;

}

MyObject myObject("before");
SetCommandstd::string,MyObject
cmd(myObject,&MyObject::setName,&MyObject::getName,"after");

The mechanism should be like the registration of serializable class with
boost.
The problem here is the registration of the functor, we don't register
the address of the functor, but only its type(function signature).
Thus it is difficult to allocate this functor !
If someone can give me a solution to this problem, it would be great :)

Remark: I don't want to implement the operator () inside each object
used, because it is not appropriate in my code (too much classes).�

Thanks in advance.

Regards.
...
----- Original message -----
From: "Robert Ramey‎" 
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Serialization of functors and MPL
Date: Thu, 16 Sep 2010 14:20:06 -0800
Anonymous user wrote:
...
Hello everybody,
I'm currently trying to serialize functors.
...
Thanks in advance.
Without going through your specific situation, I can say that this is
an
easy problem.
Here are a couple of ways to do it.
a) use boost::variant
Make your functors: f, g, h
make a variant boost::variant v;
v = f or g or h ...
#include boost/serialization/variant.hpp
serialize v
b) make your functors f, g, h all derived from a base class - functors
make the base class polymorphic by making at least one member virtual
EXPORT f, g, and h
functor *fx;
fx = &f, or &g, or &h
serialize fx
c) There might be a way to do it with boost::any also.
Robert Ramey
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