lib/optional

An implementation of std::optional. More...

Classes
struct	halcheck::lib::nullopt_t
	An implementation of std::nullopt_t. More...
struct	halcheck::lib::bad_optional_access
	An implementation of std::bad_optional_access. More...
class	halcheck::lib::optional< T >
	An implementation of std::optional. More...
struct	halcheck::lib::optional< void >
	A specialization of optional for "void". More...
struct	halcheck::lib::optional< const void >
	A specialization of optional for "const void". More...
struct	halcheck::lib::optional< volatile void >
	A specialization of optional for "volatile void". More...
struct	halcheck::lib::optional< const volatile void >
	A specialization of optional for "const volatile void". More...

Functions
template<typename T >
constexpr lib::optional< lib::decay_t< T > >	halcheck::lib::make_optional (T &&value)
	An implementation of std::make_optional.
template<typename T , typename... Args>
constexpr lib::optional< T >	halcheck::lib::make_optional (Args &&...args)
	An implementation of std::make_optional.
template<typename T , typename U , typename... Args>
constexpr lib::optional< T >	halcheck::lib::make_optional (const std::initializer_list< U > &ilist, Args &&...args)
	An implementation of std::make_optional.
template<typename T , typename U >
bool	halcheck::lib::operator== (const lib::optional< T > &lhs, const lib::optional< U > &rhs)
	An implementation of std::optional::operator==.
template<typename T >
bool	halcheck::lib::operator== (const lib::nullopt_t &, const lib::optional< T > &value)
	An implementation of std::optional::operator==.
template<typename T >
bool	halcheck::lib::operator== (const lib::optional< T > &value, const lib::nullopt_t &)
	An implementation of std::optional::operator==.
template<typename T , typename U >
bool	halcheck::lib::operator== (const U &lhs, const lib::optional< T > &rhs)
	An implementation of std::optional::operator==.
template<typename T , typename U >
bool	halcheck::lib::operator== (const lib::optional< T > &lhs, const U &rhs)
	An implementation of std::optional::operator==.
template<typename T , typename U >
bool	halcheck::lib::operator!= (const lib::optional< T > &lhs, const lib::optional< U > &rhs)
	An implementation of std::optional::operator==.
template<typename T >
bool	halcheck::lib::operator!= (const lib::nullopt_t &, const lib::optional< T > &value)
	An implementation of std::optional::operator==.
template<typename T >
bool	halcheck::lib::operator!= (const lib::optional< T > &value, const lib::nullopt_t &)
	An implementation of std::optional::operator==.
template<typename T , typename U >
bool	halcheck::lib::operator!= (const U &lhs, const lib::optional< T > &rhs)
	An implementation of std::optional::operator==.
template<typename T , typename U >
bool	halcheck::lib::operator!= (const lib::optional< T > &lhs, const U &rhs)
	An implementation of std::optional::operator==.

Variables
static constexpr nullopt_t	halcheck::lib::nullopt {nullopt_t::tag{}}
	An implementation of std::nullopt.

Friends
template<bool _ = true>
void	halcheck::lib::optional< T >::swap (lib::optional< T > &lhs, lib::optional< T > &rhs) noexcept(std::is_nothrow_move_constructible< T >() &&lib::is_nothrow_swappable< T >())
	An implementation of std::swap for optional.

Detailed Description

An implementation of std::optional.

See also

https://en.cppreference.com/w/cpp/header/optional