Hi Sukender, concerning Variant, for simple types
something like http://trac.rtmpd.com/browser/trunk/sources/common/src/utils/misc/variant.cpp http://trac.rtmpd.com/browser/trunk/sources/common/include/utils/misc/variant.h http://trac.rtmpd.com/browser/trunk/sources/common/include/utils/misc/variantmap.h might go, but it looks like you would like more, then discussion here http://stackoverflow.com/questions/5319216/implementing-a-variant-class ( esp use of boost variant instead of boost any ) might be of some use. My concern though is about speed of dynamic cast ( which is slow ), so maybe sort of custom rtti ( see example http://citeseerx.ist.psu.edu/viewdoc/download;jsessionid=C4231214774C16E32EA2B2C879DAACB3?doi=10.1.1.164.1009&rep=rep1&type=pdf ) could be used here... but if custom rtti here comes to mind http://www.rcs.hu/Articles/RTTI_Part1.htm http://www.rcs.hu/Articles/RTTI_Part2.htm and then both osgReflection (now osgIntrospection ) and Wang Rui's reflection wrappers should be considered as they already have some functionality. so simple question of variant ( and degree of it's complexity and it's speed and then maybe serialization of very special variant ) causes a lot of issues to surface. Regards Sergey
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