#ifndef MISC_HASH_H #define MISC_HASH_H #include <cstddef> #include <cstdint> #include <functional> namespace Misc { /// Implemented similar to the boost::hash_combine template <class Seed, class T> inline void hashCombine(Seed& seed, const T& v) { static_assert(sizeof(Seed) >= sizeof(std::size_t), "Resulting hash will be truncated"); std::hash<T> hasher; seed ^= static_cast<Seed>(hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2)); } } #endif