Cheok Yan Cheng wrote:

Hmmm - I think the map size is already saved to disk. If you just copy the current templated implementation for map loading and instantiate a specialized version for your case, I would think that would handle the job.

Robert Ramey

------------------------------------------------------- I am sorry. However, I do not quite understand.

Let me more specific to my case.

I have a data structure:

map fiducialPairSearchRegionMap;

Both FiducialPair and RectPair can be serialized with boost no problem.

I try to serialize the whole map by

void save(Archive & ar, const unsigned int version) const { ar & fiducialPairSearchRegionMap; }

void load(Archive & ar, const unsigned int version) { ar & fiducialPairSearchRegionMap; }

I would get the following error:

C:\Boost\include\boost-1_33_1\boost\archive\detail\iserializer.hpp(487): error C2440: 'reinterpret_cast' : cannot convert from 'typef *__w64 ' to 'void ** '

I wouldn't know what to do about the above. I don't even know what "typef" is. What compiler is this?

C:\Boost\include\boost-1_33_1\boost\archive\detail\iserializer.hpp(493): error C2664: 'T *boost::archive::detail::load_pointer_type::pointer_tweak<const FiducialPair>(const boost::serialization::extended_type_info &,void *,T &)' : cannot convert parameter 2 from 'typef ' to 'void *' with [ T=const FiducialPair, Archive=boost::archive::text_iarchive, Tptr=typef ] Conversion loses qualifiers

May I know how I can apply ur suggested solution to my case?

I would hope that the following blunt instrument might work: void load(Archive & ar, const unsigned int version) { ar >> reinterpret_cast

(fiducialPairSearchRegionMap); }

or maybe void load(Archive & ar, const unsigned int version) { void * xptr; xptr = & fiducialPairSearchRegionMap; map *mptr; mptr = static_cast >(xptr); ar >> *mptr; }

Thank you.

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