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⚡ hash function without allocation

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Niels Lohmann
2020-07-14 14:31:19 +02:00
parent 1a521cbd36
commit 5b229f4cce
3 changed files with 191 additions and 6 deletions
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5
include/nlohmann/json.hpp
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@@ -51,6 +51,7 @@ SOFTWARE.
#include <nlohmann/detail/conversions/from_json.hpp>
#include <nlohmann/detail/conversions/to_json.hpp>
#include <nlohmann/detail/exceptions.hpp>
#include <nlohmann/detail/hash.hpp>
#include <nlohmann/detail/input/binary_reader.hpp>
#include <nlohmann/detail/input/input_adapters.hpp>
#include <nlohmann/detail/input/lexer.hpp>
@@ -8698,9 +8699,7 @@ struct hash<nlohmann::json>
*/
std::size_t operator()(const nlohmann::json& j) const
{
// a naive hashing via the string representation
const auto& h = hash<nlohmann::json::string_t>();
return h(j.dump());
return nlohmann::detail::hash(j);
}
};