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#pragma once
#include <cstddef>
#include "prometheus/detail/core_export.h"
#include "prometheus/labels.h"
namespace prometheus {
namespace detail {
/// \brief Label hasher for use in STL containers.
struct PROMETHEUS_CPP_CORE_EXPORT LabelHasher {
/// \brief Compute the hash value of a map of labels.
///
/// \param labels The map that will be computed the hash value.
///
/// \returns The hash value of the given labels.
std::size_t operator()(const Labels& labels) const;
};
} // namespace detail
} // namespace prometheus
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