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c++ Programming Glossary: hash_valueC++ unordered_map using a custom class type as the key http://stackoverflow.com/questions/17016175/c-unordered-map-using-a-custom-class-type-as-the-key a bad start. For a slightly better start you may use the hash_value and hash_combine function template from the Boost library. The.. std size_t operator const Key k const using boost hash_value using boost hash_combine Start with a hash value of 0 . std.. in one member of 'Key' after the other hash_combine seed hash_value k.first hash_combine seed hash_value k.second hash_combine seed..
Magic number in boost::hash_combine http://stackoverflow.com/questions/4948780/magic-number-in-boosthash-combine to the docs it combines seed with the hash of v by seed ^ hash_value v 0x9e3779b9 seed 6 seed 2 I can see that this is deterministic... shifted versions of the old seed makes sure that even if hash_value has a fairly small range of values differences will soon be..
How to extend std::tr1::hash for custom types? http://stackoverflow.com/questions/647967/how-to-extend-stdtr1hash-for-custom-types boost hash it's enough to provide a free function size_t hash_value const MyType is there something similar for the TR1 implementation..
boost:serialization reconstruction (loading) http://stackoverflow.com/questions/6734814/boostserialization-reconstruction-loading gyro.Zaxis ar gps.Yaxis ar positions ar reward value hash_value guState inherits from State. template class Archive void guState.. gyro.Zaxis ar gps.Yaxis ar positions ar reward value hash_value accel gyro gps are simple structures with 3 double variables...
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