Re: [Boost-users] [Serialization] [Serialization of stl map withpointer to POD type]

Thank u vеry much. In regard to const char * type, i use it just a stupid c-strings, caz i need maximum performance. p.s. In my app keys are immutable. On Wed, Dec 31, 2008 at 05:02, Robert Ramey wrote:

Anytime you're serialization a "const" value its a red flag that you might really want to do that. "const" values are initialized when the object is created and should never subsequently change.

anyway, try:

save .. ar << data.count();. for (iter = data_.begin(); iter != data_.end(); iter++) { std::string key(iter->first); ar << key; ar << iter->second; }

load ... _data.clear() ar >> count; while(0 < count){ std::string key; int i; ar >> key; ar >> i; data_.insert( key.cstr(), // of course this won't work - but you get the idea i ); }

Robert Ramey

Denis Gabaidulin wrote:

...

I have following class with stl container:

class storage : { private: map data_;

friend class boost::serialization::access;

template<class Archive> void save(Archive & ar, const unsigned int version) const { map local; constDataIter iter;

for (iter = data_.begin(); iter != data_.end(); iter++) { local[iter->first] = iter->second; }

ar & local; } }

This code works, but it slowly(full copy) and consume too much memory (x2) :-(

What is the best serialization strategy with such stl containers or pointer to pod type?

I cannot change const char* to string, dont ask me why :-))

Thanks you for any advice.

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