staticlib::support::optional< T > Class Template Reference

Basic implementation of optional, reference impl ( https://github.com/akrzemi1/Optional ) cannot be used, as it doesn't support MSVC2013. More...

#include <staticlib/support/optional.hpp>

Public Member Functions
	optional ()
	Constructs empty instance.
	optional (T &&value)
	Constructor.
	optional (const optional &)
	Deleted copy constructor.
optional &	operator= (const optional &)
	Deleted copy assignment operator.
	optional (optional &&other) STATICLIB_NOEXCEPT
	Move constructor.
optional &	operator= (optional &&other) STATICLIB_NOEXCEPT
	Move assignment operator.
	~optional () STATICLIB_NOEXCEPT
	Destructor.
	operator bool () const
	Overloaded bool operator.
bool	has_value () const
	Check whether this instance stores value.
T &	value ()
	Access stored value.
const T &	value () const
	Access stored value.
T	value_or (T &&default_value) const
	Access stored value; value will be copied out.
T	value_or (T &&default_value)
	Access stored value; value will be moved out of this instance and remaining value will be in "valid, but unspecified state".
void	reset ()
	Destructs stored value if any.

Detailed Description

template<typename T>
class staticlib::support::optional< T >

Basic implementation of optional, reference impl ( https://github.com/akrzemi1/Optional ) cannot be used, as it doesn't support MSVC2013.

Constructor & Destructor Documentation

template<typename T >

staticlib::support::optional< T >::optional ( )

inline

Constructs empty instance.

template<typename T >

staticlib::support::optional< T >::optional ( T &&  value )

inlineexplicit

Constructor.

Parameters

value

to store in this instance

template<typename T >

staticlib::support::optional< T >::optional

(

const optional< T > &

)

Deleted copy constructor.

template<typename T >

staticlib::support::optional< T >::optional ( optional< T > &&  other )

inline

Move constructor.

Parameters

other

other instance

template<typename T >

staticlib::support::optional< T >::~optional ( )

inline

Destructor.

Member Function Documentation

template<typename T >

bool staticlib::support::optional< T >::has_value ( ) const

inline

Check whether this instance stores value.

Returns

true if this instance stores value, false otherwise

template<typename T >

staticlib::support::optional< T >::operator bool ( ) const

inlineexplicit

Overloaded bool operator.

Returns

true if this instance stores value, false otherwise

template<typename T >

optional& staticlib::support::optional< T >::operator=

(

const optional< T > &

)

Deleted copy assignment operator.

template<typename T >

optional& staticlib::support::optional< T >::operator= ( optional< T > &&  other )

inline

Move assignment operator.

Parameters

other

other instance

Returns

this instance

template<typename T >

void staticlib::support::optional< T >::reset ( )

inline

Destructs stored value if any.

template<typename T >

T& staticlib::support::optional< T >::value ( )

inline

Access stored value.

Returns

value reference

Exceptions

bad_optional_access_exception

of this instance is empty

template<typename T >

const T& staticlib::support::optional< T >::value ( ) const

inline

Access stored value.

Returns

value const reference

Exceptions

bad_optional_access_exception

of this instance is empty

template<typename T >

T staticlib::support::optional< T >::value_or ( T &&  default_value ) const

inline

Access stored value; value will be copied out.

Parameters

default_value

default value

Returns

stored value if has one, default value otherwise

template<typename T >

T staticlib::support::optional< T >::value_or ( T &&  default_value )

inline

Access stored value; value will be moved out of this instance and remaining value will be in "valid, but unspecified state".

Parameters

default_value

default value

Returns

stored value if has one, default value otherwise

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

• staticlib/support/optional.hpp