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Sprout/sprout/functional/hash/hash_fwd.hpp

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#ifndef SPROUT_FUNCTIONAL_HASH_HASH_FWD_HPP
#define SPROUT_FUNCTIONAL_HASH_HASH_FWD_HPP
#include <cstddef>
#include <sprout/config.hpp>
namespace sprout {
//
// hash
//
template<typename T>
struct hash;
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//
// to_hash
//
template<typename T>
SPROUT_CONSTEXPR std::size_t to_hash(T const& v);
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//
// hash_combine
//
template<typename T>
SPROUT_CONSTEXPR std::size_t hash_combine(std::size_t seed, T const& v);
//
// hash_range
//
template<typename Iterator>
SPROUT_CONSTEXPR std::size_t hash_range(Iterator first, Iterator last);
template<typename Iterator>
SPROUT_CONSTEXPR std::size_t hash_range(std::size_t seed, Iterator first, Iterator last);
} // namespace sprout
#endif // #ifndef SPROUT_FUNCTIONAL_HASH_HASH_FWD_HPP