shaka::optional< T > Class Template Reference

#include <optional.h>

Public Member Functions
	optional ()
	optional (nullopt_t)
	optional (std::nullptr_t)=delete
template<class U = T, class = typename std::enable_if< std::is_constructible<T, U&&>::value && !is_optional<typename std::decay<U>::type>::value>::type>
	optional (U &&value)
	optional (const optional &other)
	optional (optional &&other)
template<class U >
	optional (const optional< U > &other)
template<class U >
	optional (optional< U > &&other)
	~optional ()
optional &	operator= (const optional &other)
optional &	operator= (optional &&other)
const T *	operator-> () const
T *	operator-> ()
const T &	operator* () const &
T &	operator* () &
const T &&	operator* () const &&
T &&	operator* () &&
	operator bool () const
bool	has_value () const
const T &	value () const &
T &	value () &
const T &&	value () const &&
T &&	value () &&
template<class U >
T	value_or (U &&default_value) const &
template<class U >
T	value_or (U &&default_value) &&
void	reset ()
template<class... Args>
T &	emplace (Args &&... args)

Friends
template<class U >
class	optional

Detailed Description

template<class T>
class shaka::optional< T >

This is a look-alike for the std::optional type. The most common usages of this type have been implemented, but this is not a general implementation. For example, this doesn't throw exceptions and instead asserts.

See also

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

Definition at line 39 of file optional.h.

Constructor & Destructor Documentation

optional() [1/8]

template<class T>

shaka::optional< T >::optional ( )

inline

Definition at line 57 of file optional.h.

optional() [2/8]

template<class T>

shaka::optional< T >::optional ( nullopt_t  )

inline

Definition at line 58 of file optional.h.

optional() [3/8]

template<class T>

shaka::optional< T >::optional ( std::nullptr_t  )

delete

optional() [4/8]

template<class T>

template<class U = T, class = typename std::enable_if< std::is_constructible<T, U&&>::value && !is_optional<typename std::decay<U>::type>::value>::type>

shaka::optional< T >::optional ( U &&  value )

inline

Definition at line 65 of file optional.h.

optional() [5/8]

template<class T>

shaka::optional< T >::optional ( const optional< T > &  other )

inline

Definition at line 67 of file optional.h.

optional() [6/8]

template<class T>

shaka::optional< T >::optional ( optional< T > &&  other )

inline

Definition at line 71 of file optional.h.

optional() [7/8]

template<class T>

template<class U >

shaka::optional< T >::optional ( const optional< U > &  other )

inline

Definition at line 78 of file optional.h.

optional() [8/8]

template<class T>

template<class U >

shaka::optional< T >::optional ( optional< U > &&  other )

inline

Definition at line 83 of file optional.h.

~optional()

template<class T>

shaka::optional< T >::~optional ( )

inline

Definition at line 90 of file optional.h.

Member Function Documentation

emplace()

template<class T>

template<class... Args>

T& shaka::optional< T >::emplace ( Args &&...  args )

inline

Definition at line 182 of file optional.h.

has_value()

template<class T>

bool shaka::optional< T >::has_value ( ) const

inline

Definition at line 143 of file optional.h.

operator bool()

template<class T>

shaka::optional< T >::operator bool ( ) const

inlineexplicit

Definition at line 140 of file optional.h.

operator*() [1/4]

template<class T>

const T& shaka::optional< T >::operator* ( ) const

inline

Definition at line 123 of file optional.h.

operator*() [2/4]

template<class T>

T& shaka::optional< T >::operator* ( )

inline

Definition at line 127 of file optional.h.

operator*() [3/4]

template<class T>

const T&& shaka::optional< T >::operator* ( ) const

inline

Definition at line 131 of file optional.h.

operator*() [4/4]

template<class T>

T&& shaka::optional< T >::operator* ( )

inline

Definition at line 135 of file optional.h.

operator->() [1/2]

template<class T>

const T* shaka::optional< T >::operator-> ( ) const

inline

Definition at line 115 of file optional.h.

operator->() [2/2]

template<class T>

T* shaka::optional< T >::operator-> ( )

inline

Definition at line 119 of file optional.h.

operator=() [1/2]

template<class T>

optional& shaka::optional< T >::operator= ( const optional< T > &  other )

inline

Definition at line 97 of file optional.h.

operator=() [2/2]

template<class T>

optional& shaka::optional< T >::operator= ( optional< T > &&  other )

inline

Definition at line 104 of file optional.h.

reset()

template<class T>

void shaka::optional< T >::reset ( )

inline

Definition at line 174 of file optional.h.

value() [1/4]

template<class T>

const T& shaka::optional< T >::value ( ) const

inline

Definition at line 147 of file optional.h.

value() [2/4]

template<class T>

T& shaka::optional< T >::value ( )

inline

Definition at line 151 of file optional.h.

value() [3/4]

template<class T>

const T&& shaka::optional< T >::value ( ) const

inline

Definition at line 155 of file optional.h.

value() [4/4]

template<class T>

T&& shaka::optional< T >::value ( )

inline

Definition at line 159 of file optional.h.

value_or() [1/2]

template<class T>

template<class U >

T shaka::optional< T >::value_or ( U &&  default_value ) const

inline

Definition at line 165 of file optional.h.

value_or() [2/2]

template<class T>

template<class U >

T shaka::optional< T >::value_or ( U &&  default_value )

inline

Definition at line 169 of file optional.h.

Friends And Related Function Documentation

optional

template<class T>

template<class U >

friend class optional

friend

Definition at line 191 of file optional.h.

Member Data Documentation

dummy_

template<class T>

char shaka::optional< T >::dummy_

Definition at line 195 of file optional.h.

value_

template<class T>

T shaka::optional< T >::value_

Definition at line 194 of file optional.h.

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

• shaka/include/shaka/optional.h