optional.hpp File Reference

#include <boat/db/variant.hpp>
#include <optional>

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Classes
struct	boat::db::kind< T >

Namespaces
namespace	boat
namespace	boat::db

Functions
template<class T> requires requires { read(in, out.emplace()); }
void	boat::db::read (variant const &in, std::optional< T > &out)
	NULL becomes std::nullopt.
template<class T> requires requires { write(out, *in); }
void	boat::db::write (variant &out, std::optional< T > const &in)
	std::nullopt becomes NULL.