Aws::Crt::Optional< T > Class Template Reference

#include <Optional.h>

Public Types
using	ValueType = T

Public Member Functions
	Optional ()
	Optional (const T &val)
	Optional (T &&val)
	~Optional ()
template<typename U = T, typename std::enable_if< !IsSpecializationOf< typename std::decay< U >::type, Aws::Crt::Optional >::value, bool >::type = true>
Optional &	operator= (U &&u)
	Optional (const Optional< T > &other)
	Optional (Optional< T > &&other)
template<typename... Args>
	Optional (Aws::Crt::InPlaceT, Args &&...args)
Optional< T > &	operator= (const Optional &other)
template<typename U = T>
Optional< T > &	operator= (const Optional< U > &other)
template<typename U = T>
Optional< T > &	operator= (Optional< U > &&other)
template<typename... Args>
T &	emplace (Args &&...args)
const T *	operator-> () const
T *	operator-> ()
const T &	operator* () const &
T &	operator* () &
const T &&	operator* () const &&
T &&	operator* () &&
	operator bool () const noexcept
bool	has_value () const noexcept
T &	value () &
const T &	value () const &
T &&	value () &&
const T &&	value () const &&
void	reset ()

Detailed Description

template<typename T>
class Aws::Crt::Optional< T >

Custom implementation of an Option type. std::optional requires C++17

Template Parameters

T	type of the optional value

Member Typedef Documentation

ValueType

template<typename T >

using Aws::Crt::Optional< T >::ValueType = T

Constructor & Destructor Documentation

Optional() [1/6]

template<typename T >

Aws::Crt::Optional< T >::Optional ( )

inline

Optional() [2/6]

template<typename T >

Aws::Crt::Optional< T >::Optional ( const T &  val )

inline

Optional() [3/6]

template<typename T >

Aws::Crt::Optional< T >::Optional ( T &&  val )

inline

~Optional()

template<typename T >

Aws::Crt::Optional< T >::~Optional ( )

inline

Optional() [4/6]

template<typename T >

Aws::Crt::Optional< T >::Optional ( const Optional< T > &  other )

inline

Optional() [5/6]

template<typename T >

Aws::Crt::Optional< T >::Optional ( Optional< T > &&  other )

inline

Optional() [6/6]

template<typename T >

template<typename... Args>

Aws::Crt::Optional< T >::Optional ( Aws::Crt::InPlaceT  , Args &&...  args  )

inlineexplicit

Member Function Documentation

emplace()

template<typename T >

template<typename... Args>

T & Aws::Crt::Optional< T >::emplace ( Args &&...  args )

inline

has_value()

template<typename T >

bool Aws::Crt::Optional< T >::has_value ( ) const

inlinenoexcept

operator bool()

template<typename T >

Aws::Crt::Optional< T >::operator bool ( ) const

inlineexplicitnoexcept

operator*() [1/4]

template<typename T >

T & Aws::Crt::Optional< T >::operator* ( ) &

inline

operator*() [2/4]

template<typename T >

T && Aws::Crt::Optional< T >::operator* ( ) &&

inline

operator*() [3/4]

template<typename T >

const T & Aws::Crt::Optional< T >::operator* ( ) const &

inline

operator*() [4/4]

template<typename T >

const T && Aws::Crt::Optional< T >::operator* ( ) const &&

inline

operator->() [1/2]

template<typename T >

T * Aws::Crt::Optional< T >::operator-> ( )

inline

operator->() [2/2]

template<typename T >

const T * Aws::Crt::Optional< T >::operator-> ( ) const

inline

operator=() [1/4]

template<typename T >

Optional< T > & Aws::Crt::Optional< T >::operator= ( const Optional< T > &  other )

inline

operator=() [2/4]

template<typename T >

template<typename U = T>

Optional< T > & Aws::Crt::Optional< T >::operator= ( const Optional< U > &  other )

inline

operator=() [3/4]

template<typename T >

template<typename U = T>

Optional< T > & Aws::Crt::Optional< T >::operator= ( Optional< U > &&  other )

inline

operator=() [4/4]

template<typename T >

template<typename U = T, typename std::enable_if< !IsSpecializationOf< typename std::decay< U >::type, Aws::Crt::Optional >::value, bool >::type = true>

Optional & Aws::Crt::Optional< T >::operator= ( U &&  u )

inline

Assignment operator for a case when the parameter type is not Optional.

reset()

template<typename T >

void Aws::Crt::Optional< T >::reset ( )

inline

value() [1/4]

template<typename T >

T & Aws::Crt::Optional< T >::value ( ) &

inline

value() [2/4]

template<typename T >

T && Aws::Crt::Optional< T >::value ( ) &&

inline

value() [3/4]

template<typename T >

const T & Aws::Crt::Optional< T >::value ( ) const &

inline

value() [4/4]

template<typename T >

const T && Aws::Crt::Optional< T >::value ( ) const &&

inline

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

• include/aws/crt/Optional.h