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Merge pull request #11191 from DeterminateSystems/hash-symbol

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Use std::unordered_map for ValueMap
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Eelco Dolstra 2024-07-29 15:30:37 +02:00 • committed by GitHub
commit f9d55b4d51
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3 changed files with 14 additions and 3 deletions
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11
src/libexpr/symbol-table.hh
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@ -70,6 +70,8 @@ public:
auto operator<=>(const Symbol other) const { return id <=> other.id; }
bool operator==(const Symbol other) const { return id == other.id; }
friend class std::hash<Symbol>;
};
/**
@ -133,3 +135,12 @@ public:
};
}
template<>
struct std::hash<nix::Symbol>
{
std::size_t operator()(const nix::Symbol & s) const noexcept
{
return std::hash<decltype(s.id)>{}(s.id);
}
};