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Remove irr::core::hash

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Its use of std::unary_function was deprecated.
And it wasn't used anywhere.
This commit is contained in:
Desour 2023-02-21 19:29:32 +01:00 committed by sfan5
parent 839bdc1a65
commit 09e6eeb65b
1 changed files with 0 additions and 28 deletions
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28
include/irrUString.h
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@ -3612,33 +3612,5 @@ inline std::wostream& operator<<(std::wostream& out, const ustring16& in)
return out; return out;
} }
namespace unicode
{
//! Hashing algorithm for hashing a ustring. Used for things like unordered_maps.
//! Algorithm taken from std::hash<std::string>.
class hash : public std::unary_function<core::ustring, size_t>
{
public:
size_t operator()(const core::ustring& s) const
{
size_t ret = 2166136261U;
size_t index = 0;
size_t stride = 1 + s.size_raw() / 10;
core::ustring::const_iterator i = s.begin();
while (i != s.end())
{
// TODO: Don't force u32 on an x64 OS. Make it agnostic.
ret = 16777619U * ret ^ (size_t)s[(u32)index];
index += stride;
i += stride;
}
return (ret);
}
};
} // end namespace unicode
} // end namespace core } // end namespace core
} // end namespace irr } // end namespace irr