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Add hash for geom::vector

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This commit is contained in:
Nikita Lisitsa 2021-03-04 14:29:09 +03:00
parent ea46e820ab
commit 2f56f0caa2
1 changed files with 19 additions and 0 deletions
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19
libs/geom/include/psemek/geom/vector.hpp
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@ -1,6 +1,7 @@
#pragma once
#include <psemek/geom/detail/array.hpp>
#include <psemek/util/hash.hpp>
#include <iostream>
#include <cstddef>
@ -358,3 +359,21 @@ namespace psemek::geom
}
}
namespace std
{
template <typename T, std::size_t N>
struct hash<::psemek::geom::vector<T, N>>
{
std::size_t operator()(::psemek::geom::vector<T, N> const & v) const noexcept
{
std::hash<T> h;
std::size_t r = 0;
for (std::size_t i = 0; i < N; ++i)
::psemek::util::hash_combine(r, h(v[i]));
return r;
}
};
}