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boost::hash<unsigned long long>
// In header: <boost/functional/hash.hpp> struct hash<unsigned long long> { std::size_t operator()(unsigned long long) const; };
std::size_t operator()(unsigned long long val) const;
| Returns: | Unspecified in TR1, except that equal arguments yield the same result. hash_value(val) in Boost. | 
| Throws: | Doesn't throw |