#include <proxsuite/helpers/tl-optional.hpp>

Public Types
using	value_type = T&

Public Member Functions
template<class F >
TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t< F, T & >	and_then (F &&f) &

template<class F >
TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t< F, T & >	and_then (F &&f) &&

template<class F >
constexpr detail::invoke_result_t< F, const T & >	and_then (F &&f) const &

template<class F >
constexpr detail::invoke_result_t< F, const T & >	and_then (F &&f) const &&

template<class F >
TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(std::declval< optional & >(), std::declval< F && >()))	map (F &&f) &
	Carries out some operation on the stored object if there is one.

template<class F >
TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(std::declval< optional && >(), std::declval< F && >()))	map (F &&f) &&

template<class F >
constexpr decltype(detail::optional_map_impl(std::declval< const optional & >(), std::declval< F && >()))	map (F &&f) const &

template<class F >
constexpr decltype(detail::optional_map_impl(std::declval< const optional && >(), std::declval< F && >()))	map (F &&f) const &&

template<class F >
TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(std::declval< optional & >(), std::declval< F && >()))	transform (F &&f) &
	Carries out some operation on the stored object if there is one.

template<class F >
TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl(std::declval< optional && >(), std::declval< F && >()))	transform (F &&f) &&

template<class F >
constexpr decltype(detail::optional_map_impl(std::declval< const optional & >(), std::declval< F && >()))	transform (F &&f) const &

template<class F >
constexpr decltype(detail::optional_map_impl(std::declval< const optional && >(), std::declval< F && >()))	transform (F &&f) const &&

template<class F , detail::enable_if_ret_void< F > * = nullptr>
optional< T > TL_OPTIONAL_11_CONSTEXPR	or_else (F &&f) &
	Calls `f` if the optional is empty.

template<class F , detail::disable_if_ret_void< F > * = nullptr>
optional< T > TL_OPTIONAL_11_CONSTEXPR	or_else (F &&f) &

template<class F , detail::enable_if_ret_void< F > * = nullptr>
optional< T >	or_else (F &&f) &&

template<class F , detail::disable_if_ret_void< F > * = nullptr>
optional< T > TL_OPTIONAL_11_CONSTEXPR	or_else (F &&f) &&

template<class F , detail::enable_if_ret_void< F > * = nullptr>
optional< T >	or_else (F &&f) const &

template<class F , detail::disable_if_ret_void< F > * = nullptr>
optional< T > TL_OPTIONAL_11_CONSTEXPR	or_else (F &&f) const &

template<class F , detail::enable_if_ret_void< F > * = nullptr>
optional< T >	or_else (F &&f) const &&

template<class F , detail::disable_if_ret_void< F > * = nullptr>
optional< T >	or_else (F &&f) const &&

template<class F , class U >
U	map_or (F &&f, U &&u) &
	Maps the stored value with `f` if there is one, otherwise returns `u`

template<class F , class U >
U	map_or (F &&f, U &&u) &&

template<class F , class U >
U	map_or (F &&f, U &&u) const &

template<class F , class U >
U	map_or (F &&f, U &&u) const &&

template<class F , class U >
detail::invoke_result_t< U >	map_or_else (F &&f, U &&u) &

template<class F , class U >
detail::invoke_result_t< U >	map_or_else (F &&f, U &&u) &&

template<class F , class U >
detail::invoke_result_t< U >	map_or_else (F &&f, U &&u) const &

template<class F , class U >
detail::invoke_result_t< U >	map_or_else (F &&f, U &&u) const &&

template<class U >
constexpr optional< typename std::decay< U >::type >	conjunction (U &&u) const
	Returns `u` if `*this` has a value, otherwise an empty optional.

TL_OPTIONAL_11_CONSTEXPR optional	disjunction (const optional &rhs) &
	Returns `rhs` if `*this` is empty, otherwise the current value.

constexpr optional	disjunction (const optional &rhs) const &

TL_OPTIONAL_11_CONSTEXPR optional	disjunction (const optional &rhs) &&

constexpr optional	disjunction (const optional &rhs) const &&

TL_OPTIONAL_11_CONSTEXPR optional	disjunction (optional &&rhs) &

constexpr optional	disjunction (optional &&rhs) const &

TL_OPTIONAL_11_CONSTEXPR optional	disjunction (optional &&rhs) &&

constexpr optional	disjunction (optional &&rhs) const &&

optional	take ()
	Takes the value out of the optional, leaving it empty.

constexpr	optional () noexcept
	Constructs an optional that does not contain a value.

constexpr	optional (nullopt_t) noexcept

TL_OPTIONAL_11_CONSTEXPR	optional (const optional &rhs) noexcept=default

TL_OPTIONAL_11_CONSTEXPR	optional (optional &&rhs)=default

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t< U > >::value > * = nullptr>
constexpr	optional (U &&u) noexcept
	Constructs the stored value with `u`.

template<class U >
constexpr	optional (const optional< U > &rhs) noexcept

	~optional ()=default
	No-op.

optional &	operator= (nullopt_t) noexcept

optional &	operator= (const optional &rhs)=default

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t< U > >::value > * = nullptr>
optional &	operator= (U &&u)
	Rebinds this optional to `u`.

template<class U >
optional &	operator= (const optional< U > &rhs) noexcept

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t< U > >::value > * = nullptr>
optional &	emplace (U &&u) noexcept
	Rebinds this optional to `u`.

void	swap (optional &rhs) noexcept

constexpr const T *	operator-> () const noexcept
	Returns a pointer to the stored value.

TL_OPTIONAL_11_CONSTEXPR T *	operator-> () noexcept

TL_OPTIONAL_11_CONSTEXPR T &	operator* () noexcept
	Returns the stored value.

constexpr const T &	operator* () const noexcept

constexpr bool	has_value () const noexcept

constexpr	operator bool () const noexcept

TL_OPTIONAL_11_CONSTEXPR T &	value ()

TL_OPTIONAL_11_CONSTEXPR const T &	value () const

template<class U >
constexpr T	value_or (U &&u) const &noexcept
	Returns the stored value if there is one, otherwise returns `u`

template<class U >
TL_OPTIONAL_11_CONSTEXPR T	value_or (U &&u) &&noexcept
	\group value_or

void	reset () noexcept
	Destroys the stored value if one exists, making the optional empty.

Detailed Description

template<class T>
class tl::optional< T & >

Specialization for when T is a reference. optional<T&> acts similarly to a T*, but provides more operations and shows intent more clearly.

Definition at line 1874 of file tl-optional.hpp.

Member Typedef Documentation

◆ value_type

template<class T >

using tl::optional< T & >::value_type = T&

Definition at line 2304 of file tl-optional.hpp.

Constructor & Destructor Documentation

◆ optional() [1/6]

template<class T >

constexpr tl::optional< T & >::optional ( )

inlineconstexprnoexcept

Constructs an optional that does not contain a value.

Definition at line 2307 of file tl-optional.hpp.

◆ optional() [2/6]

template<class T >

constexpr tl::optional< T & >::optional ( nullopt_t )

inlineconstexprnoexcept

Definition at line 2312 of file tl-optional.hpp.

◆ optional() [3/6]

template<class T >

TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::optional ( const optional< T & > & rhs )

defaultnoexcept

Copy constructor

If rhs contains a value, the stored value is direct-initialized with it. Otherwise, the constructed optional is empty.

◆ optional() [4/6]

template<class T >

TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::optional ( optional< T & > && rhs )

default

Move constructor

If rhs contains a value, the stored value is direct-initialized with it. Otherwise, the constructed optional is empty.

◆ optional() [5/6]

template<class T >

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t >::value > * = nullptr>

constexpr tl::optional< T & >::optional ( U && u )

inlineconstexprnoexcept

Constructs the stored value with u.

Definition at line 2333 of file tl-optional.hpp.

◆ optional() [6/6]

template<class T >

template<class U >

constexpr tl::optional< T & >::optional ( const optional & rhs )

inlineexplicitconstexprnoexcept

Definition at line 2340 of file tl-optional.hpp.

◆ ~optional()

template<class T >

tl::optional< T & >::~optional ( )

default

No-op.

Member Function Documentation

◆ and_then() [1/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t< F, T & > tl::optional< T & >::and_then ( F && f ) &

inline

Carries out some operation which returns an optional on the stored object if there is one.

Definition at line 1935 of file tl-optional.hpp.

◆ and_then() [2/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR detail::invoke_result_t< F, T & > tl::optional< T & >::and_then ( F && f ) &&

inline

Definition at line 1946 of file tl-optional.hpp.

◆ and_then() [3/4]

template<class T >

template<class F >

constexpr detail::invoke_result_t< F, const T & > tl::optional< T & >::and_then ( F && f ) const &

inlineconstexpr

Definition at line 1957 of file tl-optional.hpp.

◆ and_then() [4/4]

template<class T >

template<class F >

constexpr detail::invoke_result_t< F, const T & > tl::optional< T & >::and_then ( F && f ) const &&

inlineconstexpr

Definition at line 1969 of file tl-optional.hpp.

◆ map() [1/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl( std::declval< optional & >(), std::declval< F && >())) tl::optional< T & >::map ( F && f ) &

inline

Carries out some operation on the stored object if there is one.

Definition at line 2013 of file tl-optional.hpp.

◆ map() [2/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl( std::declval< optional && >(), std::declval< F && >())) tl::optional< T & >::map ( F && f ) &&

inline

Definition at line 2022 of file tl-optional.hpp.

◆ map() [3/4]

template<class T >

template<class F >

constexpr decltype(detail::optional_map_impl(std::declval< const optional & >(), std::declval< F && >())) tl::optional< T & >::map ( F && f ) const &

inlineconstexpr

Definition at line 2030 of file tl-optional.hpp.

◆ map() [4/4]

template<class T >

template<class F >

constexpr decltype(detail::optional_map_impl(std::declval< const optional && >(), std::declval< F && >())) tl::optional< T & >::map ( F && f ) const &&

inlineconstexpr

Definition at line 2039 of file tl-optional.hpp.

◆ transform() [1/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl( std::declval< optional & >(), std::declval< F && >())) tl::optional< T & >::transform ( F && f ) &

inline

Carries out some operation on the stored object if there is one.

Definition at line 2078 of file tl-optional.hpp.

◆ transform() [2/4]

template<class T >

template<class F >

TL_OPTIONAL_11_CONSTEXPR decltype(detail::optional_map_impl( std::declval< optional && >(), std::declval< F && >())) tl::optional< T & >::transform ( F && f ) &&

inline

\group map \synopsis template <class F> auto transform(F &&f) &&;

Definition at line 2089 of file tl-optional.hpp.

◆ transform() [3/4]

template<class T >

template<class F >

constexpr decltype(detail::optional_map_impl(std::declval< const optional & >(), std::declval< F && >())) tl::optional< T & >::transform ( F && f ) const &

inlineconstexpr

Definition at line 2097 of file tl-optional.hpp.

◆ transform() [4/4]

template<class T >

template<class F >

constexpr decltype(detail::optional_map_impl(std::declval< const optional && >(), std::declval< F && >())) tl::optional< T & >::transform ( F && f ) const &&

inlineconstexpr

Definition at line 2106 of file tl-optional.hpp.

◆ or_else() [1/8]

template<class T >

template<class F , detail::enable_if_ret_void< F > * = nullptr>

optional< T > TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::or_else ( F && f ) &

inline

Calls f if the optional is empty.

Definition at line 2115 of file tl-optional.hpp.

◆ or_else() [2/8]

template<class T >

template<class F , detail::disable_if_ret_void< F > * = nullptr>

optional< T > TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::or_else ( F && f ) &

inline

Definition at line 2125 of file tl-optional.hpp.

◆ or_else() [3/8]

template<class T >

template<class F , detail::enable_if_ret_void< F > * = nullptr>

optional< T > tl::optional< T & >::or_else ( F && f ) &&

inline

Definition at line 2131 of file tl-optional.hpp.

◆ or_else() [4/8]

template<class T >

template<class F , detail::disable_if_ret_void< F > * = nullptr>

optional< T > TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::or_else ( F && f ) &&

inline

Definition at line 2141 of file tl-optional.hpp.

◆ or_else() [5/8]

template<class T >

template<class F , detail::enable_if_ret_void< F > * = nullptr>

optional< T > tl::optional< T & >::or_else ( F && f ) const &

inline

Definition at line 2147 of file tl-optional.hpp.

◆ or_else() [6/8]

template<class T >

template<class F , detail::disable_if_ret_void< F > * = nullptr>

optional< T > TL_OPTIONAL_11_CONSTEXPR tl::optional< T & >::or_else ( F && f ) const &

inline

Definition at line 2157 of file tl-optional.hpp.

◆ or_else() [7/8]

template<class T >

template<class F , detail::enable_if_ret_void< F > * = nullptr>

optional< T > tl::optional< T & >::or_else ( F && f ) const &&

inline

Definition at line 2164 of file tl-optional.hpp.

◆ or_else() [8/8]

template<class T >

template<class F , detail::disable_if_ret_void< F > * = nullptr>

optional< T > tl::optional< T & >::or_else ( F && f ) const &&

inline

Definition at line 2174 of file tl-optional.hpp.

◆ map_or() [1/4]

template<class T >

template<class F , class U >

U tl::optional< T & >::map_or	(	F &&	f,
		U &&	u ) &

inline

Maps the stored value with f if there is one, otherwise returns u

Definition at line 2182 of file tl-optional.hpp.

◆ map_or() [2/4]

template<class T >

template<class F , class U >

U tl::optional< T & >::map_or	(	F &&	f,
		U &&	u ) &&

inline

Definition at line 2189 of file tl-optional.hpp.

◆ map_or() [3/4]

template<class T >

template<class F , class U >

U tl::optional< T & >::map_or	(	F &&	f,
		U &&	u ) const &

inline

Definition at line 2196 of file tl-optional.hpp.

◆ map_or() [4/4]

template<class T >

template<class F , class U >

U tl::optional< T & >::map_or	(	F &&	f,
		U &&	u ) const &&

inline

Definition at line 2204 of file tl-optional.hpp.

◆ map_or_else() [1/4]

template<class T >

template<class F , class U >

detail::invoke_result_t< U > tl::optional< T & >::map_or_else	(	F &&	f,
		U &&	u ) &

inline

Maps the stored value with f if there is one, otherwise calls u and returns the result.

Definition at line 2214 of file tl-optional.hpp.

◆ map_or_else() [2/4]

template<class T >

template<class F , class U >

detail::invoke_result_t< U > tl::optional< T & >::map_or_else	(	F &&	f,
		U &&	u ) &&

inline

Definition at line 2221 of file tl-optional.hpp.

◆ map_or_else() [3/4]

template<class T >

template<class F , class U >

detail::invoke_result_t< U > tl::optional< T & >::map_or_else	(	F &&	f,
		U &&	u ) const &

inline

Definition at line 2228 of file tl-optional.hpp.

◆ map_or_else() [4/4]

template<class T >

template<class F , class U >

detail::invoke_result_t< U > tl::optional< T & >::map_or_else	(	F &&	f,
		U &&	u ) const &&

inline

Definition at line 2236 of file tl-optional.hpp.

◆ conjunction()

template<class T >

template<class U >

constexpr optional< typename std::decay::type > tl::optional< T & >::conjunction ( U && u ) const

inlineconstexpr

Returns u if *this has a value, otherwise an empty optional.

Definition at line 2245 of file tl-optional.hpp.

◆ disjunction() [1/8]

template<class T >

TL_OPTIONAL_11_CONSTEXPR optional tl::optional< T & >::disjunction ( const optional< T & > & rhs ) &

inline

Returns rhs if *this is empty, otherwise the current value.

Definition at line 2252 of file tl-optional.hpp.

◆ disjunction() [2/8]

template<class T >

constexpr optional tl::optional< T & >::disjunction ( const optional< T & > & rhs ) const &

inlineconstexpr

Definition at line 2257 of file tl-optional.hpp.

◆ disjunction() [3/8]

template<class T >

TL_OPTIONAL_11_CONSTEXPR optional tl::optional< T & >::disjunction ( const optional< T & > & rhs ) &&

inline

Definition at line 2262 of file tl-optional.hpp.

◆ disjunction() [4/8]

template<class T >

constexpr optional tl::optional< T & >::disjunction ( const optional< T & > & rhs ) const &&

inlineconstexpr

Definition at line 2268 of file tl-optional.hpp.

◆ disjunction() [5/8]

template<class T >

TL_OPTIONAL_11_CONSTEXPR optional tl::optional< T & >::disjunction ( optional< T & > && rhs ) &

inline

Definition at line 2274 of file tl-optional.hpp.

◆ disjunction() [6/8]

template<class T >

constexpr optional tl::optional< T & >::disjunction ( optional< T & > && rhs ) const &

inlineconstexpr

Definition at line 2279 of file tl-optional.hpp.

◆ disjunction() [7/8]

template<class T >

TL_OPTIONAL_11_CONSTEXPR optional tl::optional< T & >::disjunction ( optional< T & > && rhs ) &&

inline

Definition at line 2284 of file tl-optional.hpp.

◆ disjunction() [8/8]

template<class T >

constexpr optional tl::optional< T & >::disjunction ( optional< T & > && rhs ) const &&

inlineconstexpr

Definition at line 2290 of file tl-optional.hpp.

◆ take()

template<class T >

optional tl::optional< T & >::take ( )

inline

Takes the value out of the optional, leaving it empty.

Definition at line 2297 of file tl-optional.hpp.

◆ operator=() [1/4]

template<class T >

optional & tl::optional< T & >::operator= ( nullopt_t )

inlinenoexcept

Assignment to empty.

Destroys the current value if there is one.

Definition at line 2351 of file tl-optional.hpp.

◆ operator=() [2/4]

template<class T >

optional & tl::optional< T & >::operator= ( const optional< T & > & rhs )

default

Copy assignment.

Rebinds this optional to the referee of rhs if there is one. Otherwise resets the stored value in *this.

◆ operator=() [3/4]

template<class T >

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t >::value > * = nullptr>

optional & tl::optional< T & >::operator= ( U && u )

inline

Rebinds this optional to u.

Definition at line 2367 of file tl-optional.hpp.

◆ operator=() [4/4]

template<class T >

template<class U >

optional & tl::optional< T & >::operator= ( const optional & rhs )

inlinenoexcept

Converting copy assignment operator.

Rebinds this optional to the referee of rhs if there is one. Otherwise resets the stored value in *this.

Definition at line 2379 of file tl-optional.hpp.

◆ emplace()

template<class T >

template<class U = T, detail::enable_if_t< !detail::is_optional< detail::decay_t >::value > * = nullptr>

optional & tl::optional< T & >::emplace ( U && u )

inlinenoexcept

Rebinds this optional to u.

Definition at line 2389 of file tl-optional.hpp.

◆ swap()

template<class T >

void tl::optional< T & >::swap ( optional< T & > & rhs )

inlinenoexcept

Definition at line 2394 of file tl-optional.hpp.

◆ operator->() [1/2]

template<class T >

constexpr const T * tl::optional< T & >::operator-> ( ) const

inlineconstexprnoexcept

Returns a pointer to the stored value.

Definition at line 2397 of file tl-optional.hpp.

◆ operator->() [2/2]

template<class T >

TL_OPTIONAL_11_CONSTEXPR T * tl::optional< T & >::operator-> ( )

inlinenoexcept

Definition at line 2399 of file tl-optional.hpp.

◆ operator*() [1/2]

template<class T >

TL_OPTIONAL_11_CONSTEXPR T & tl::optional< T & >::operator* ( )

inlinenoexcept

Returns the stored value.

Definition at line 2402 of file tl-optional.hpp.

◆ operator*() [2/2]

template<class T >

constexpr const T & tl::optional< T & >::operator* ( ) const

inlineconstexprnoexcept

Definition at line 2404 of file tl-optional.hpp.

◆ has_value()

template<class T >

constexpr bool tl::optional< T & >::has_value ( ) const

inlineconstexprnoexcept

Definition at line 2406 of file tl-optional.hpp.

◆ operator bool()

template<class T >

constexpr tl::optional< T & >::operator bool ( ) const

inlineexplicitconstexprnoexcept

Definition at line 2408 of file tl-optional.hpp.

◆ value() [1/2]

template<class T >

TL_OPTIONAL_11_CONSTEXPR T & tl::optional< T & >::value ( )

inline

Returns the contained value if there is one, otherwise throws bad_optional_access

Definition at line 2415 of file tl-optional.hpp.

◆ value() [2/2]

template<class T >

TL_OPTIONAL_11_CONSTEXPR const T & tl::optional< T & >::value ( ) const

inline

Definition at line 2421 of file tl-optional.hpp.

◆ value_or() [1/2]

template<class T >

template<class U >

constexpr T tl::optional< T & >::value_or ( U && u ) const &

inlineconstexprnoexcept

Returns the stored value if there is one, otherwise returns u

Definition at line 2430 of file tl-optional.hpp.

◆ value_or() [2/2]

template<class T >

template<class U >

TL_OPTIONAL_11_CONSTEXPR T tl::optional< T & >::value_or ( U && u ) &&

inlinenoexcept

\group value_or

Definition at line 2440 of file tl-optional.hpp.

◆ reset()

template<class T >

void tl::optional< T & >::reset ( )

inlinenoexcept

Destroys the stored value if one exists, making the optional empty.

Definition at line 2449 of file tl-optional.hpp.

The documentation for this class was generated from the following file:

include/proxsuite/helpers/tl-optional.hpp

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ value_type

Constructor & Destructor Documentation

◆ optional() [1/6]

◆ optional() [2/6]

◆ optional() [3/6]

◆ optional() [4/6]

◆ optional() [5/6]

◆ optional() [6/6]

◆ ~optional()

Member Function Documentation

◆ and_then() [1/4]

◆ and_then() [2/4]

◆ and_then() [3/4]

◆ and_then() [4/4]

◆ map() [1/4]

◆ map() [2/4]

◆ map() [3/4]

◆ map() [4/4]

◆ transform() [1/4]

◆ transform() [2/4]

◆ transform() [3/4]

◆ transform() [4/4]

◆ or_else() [1/8]

◆ or_else() [2/8]

◆ or_else() [3/8]

◆ or_else() [4/8]

◆ or_else() [5/8]

◆ or_else() [6/8]

◆ or_else() [7/8]

◆ or_else() [8/8]

◆ map_or() [1/4]

◆ map_or() [2/4]

◆ map_or() [3/4]

◆ map_or() [4/4]

◆ map_or_else() [1/4]

◆ map_or_else() [2/4]

◆ map_or_else() [3/4]

◆ map_or_else() [4/4]

◆ conjunction()

◆ disjunction() [1/8]

◆ disjunction() [2/8]

◆ disjunction() [3/8]

◆ disjunction() [4/8]

◆ disjunction() [5/8]

◆ disjunction() [6/8]

◆ disjunction() [7/8]

◆ disjunction() [8/8]

◆ take()

◆ operator=() [1/4]

◆ operator=() [2/4]

◆ operator=() [3/4]

◆ operator=() [4/4]

◆ emplace()

◆ swap()

◆ operator->() [1/2]

◆ operator->() [2/2]

◆ operator*() [1/2]

◆ operator*() [2/2]

◆ has_value()

◆ operator bool()

◆ value() [1/2]

◆ value() [2/2]

◆ value_or() [1/2]

◆ value_or() [2/2]

◆ reset()