core::optional< T > Class Template Reference

#include <optional.h>

Public Member Functions
	optional ()
	optional (const T &&t)
	optional (const T &t)
	optional (const optional &&o)
optional &	operator= (optional &&o)
	~optional ()
constexpr	operator bool () const
constexpr bool	has_value () const
T &	value () const

Detailed Description

template<typename T>
class core::optional< T >

Definition at line 24 of file optional.h.

Constructor & Destructor Documentation

optional() [1/4]

template<typename T>

core::optional< T >::optional ( )

inline

Definition at line 26 of file optional.h.

               :
            p(new payload()) {
    }

optional() [2/4]

template<typename T>

core::optional< T >::optional ( const T &&  t )

inline

Definition at line 30 of file optional.h.

                          :
            p(new payload_full(t)) {
    }

optional() [3/4]

template<typename T>

core::optional< T >::optional ( const T &  t )

inline

Definition at line 35 of file optional.h.

                         :
            p(new payload_full(t)) {
    }

optional() [4/4]

template<typename T>

core::optional< T >::optional ( const optional< T > &&  o )

inline

Definition at line 40 of file optional.h.

                                 {
        delete p;
        this->p = o.p;
    }

~optional()

template<typename T>

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

inline

Definition at line 54 of file optional.h.

                {
        delete p;
        p = nullptr;
    }

Member Function Documentation

has_value()

template<typename T>

constexpr bool core::optional< T >::has_value ( ) const

inline

Definition at line 63 of file optional.h.

                                     {
        return p->has_value;
    }

operator bool()

template<typename T>

constexpr core::optional< T >::operator bool ( ) const

inlineexplicit

Definition at line 59 of file optional.h.

                                             {
        return p->has_value;
    }

operator=()

template<typename T>

optional& core::optional< T >::operator= ( optional< T > &&  o )

inline

Definition at line 45 of file optional.h.

                                      {
        if (this != &o) {
            delete p;
            this->p = o.p;
            o.p = nullptr;
        }
        return *this;
    }

value()

template<typename T>

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

inline

Definition at line 67 of file optional.h.

                            {
        assert(p->has_value);
        return static_cast<payload_full*>(p)->t;
    }

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

• xmippCore/core/optional.h