Re: [Boost-users] BoostSerialization callinga customserialize method

Subject: Re: [Boost-users] BoostSerialization callinga customserialize method
From: Jeff Flinn (TriumphSprint2000_at_[hidden])
Date: 2010-08-27 15:23:59

Pooyan Dadvand wrote:
> 
...

>> So how about one of the following?
>>
>> struct extradata {
>> ...
>> };
>>
>> std::pair<VariableData, extradata> m_x
>> std::pair<VariableData &, extradata&> m_x
>> std::pair<VariableData *, extradata*> m_x
>> std::pair<VariableData*, extradata  &> m_x
>> ...
>> ar << m_x;
>>
>>   
> Can you please explain me more the idea of extradata structure? Consider 
> that my extradata can be a double, ublas::vector, or even 
> std::vector<weak_ptr<Element> > or any new type of variables.  I have:
> 
> std::vector<std::pair<VariableData, extradata> > mData
> ...
> ar << mData;
> 
> 
> and each element of vector can have a different type of data with 
> different size or even have pointers. (It's a heterogeneous container) 
> In this situation I don't know how to implement the extradata structure 
> without knowing the type of variable I'm storing in it.

You must have some means to determine what that void* is pointing to 
when you access is from elsewhere in your application. I think Robert is 
suggesting that you implement extradata(and it's derivative)'s serialize 
method using that same scheme.

Jeff