C++0x adds hash<...>(...)
.
I could not find a hash_combine
function though, as presented in boost. What is the cleanest way to implement something like this? Perhaps, using C++0x xor_combine
?
Well, just do it like the boost guys did it:
template <class T>
inline void hash_combine(std::size_t& seed, const T& v)
{
std::hash<T> hasher;
seed ^= hasher(v) + 0x9e3779b9 + (seed<<6) + (seed>>2);
}