Re: [Boost-users] Serialization with pointer to const object

Subject: Re: [Boost-users] Serialization with pointer to const object
From: Emil Dotchevski (emildotchevski_at_[hidden])
Date: 2009-07-24 14:02:49

But in his case the object he is serializing (the pointer itself)
isn't const. In addition, in the typical use case the object the
pointer points to is also mutable. Shouldn't the const_cast be in
Boost Serialization?

Emil Dotchevski
Reverge Studios, Inc.
http://www.revergestudios.com/reblog/index.php?n=ReCode

On Fri, Jul 24, 2009 at 9:33 AM, Robert Ramey<ramey_at_[hidden]> wrote:
> Hmm - a const object is one that can't be changed once created.  If
> you think about it, this conflicts with what serialization is.  If in spite
> of this, you still want to do it, it is possible.  Use const_cast.  Also
> there information in the documentation regarding this.
>
> Robert Ramey
>
> Soumen wrote:
>> Hi,
>>
>> I'm using gcc 4.2.2 and boost 1.35. If I try to serialize pointer to
>> some const objects, I'm getting compilation problem. Is there any
>> limitation? Or I need to do certain things differently? I couldn't
>> figured any solution over net. If there already exist any topic which
>> points to solution, please point me to that. Otherwise, guide me to
>> resolve the problem at hand. I'm new to boost.
>>
>> Say, my data member in the class myClass is
>>
>> const myType    *ptr;
>>
>> In the serialize() routine, I'm doing it in following way:
>>
>> template< class Archive >
>> void    myClass::serialize(Archive &ar, const unsigned int version)
>> {
>>   ar & ptr;
>>
>>   // I've tried "ar & const_cast< myType* >(ptr)" and
>>   // "ar & (myType *) ptr" as well - it didn't work
>>
>>   /* serialize other members */
>>
>> }
>>
>> Regards,
>> - Soumen