optionalData< T > Class Template Reference

A simplified version of std::optional (c++17), with much simpler construction semantics. More...

Public Member Functions
	optionalData (const optionalData< T > &)=default
	Copy construct. More...
	optionalData (optionalData< T > &&)=default
	Move construct. More...
optionalData< T > &	operator= (const optionalData< T > &)=default
	Copy assignment. More...
optionalData< T > &	operator= (optionalData< T > &&)=default
	Move assignment. More...
	optionalData ()
	Default construct. More...
	optionalData (const T &val)
	Copy construct from value. More...
	optionalData (T &&val)
	Move construct from value. More...
bool	has_value () const noexcept
	True if it has a value. More...
T &	value () noexcept
	Access to the value. More...
const T &	value () const noexcept
	Access to the value. More...
const T &	value_or (const T &deflt) const
	Return value or default. More...
	operator bool () const noexcept
	True if it has a value. More...
const T &	operator* () const noexcept
	Access the value. More...
T &	operator* () noexcept
	Access the value. More...
void	operator= (const T &val)
	Copy assignment from value. More...
void	operator= (T &&val)
	Move assignment from value. More...

Detailed Description

template<class T>
class Foam::optionalData< T >

A simplified version of std::optional (c++17), with much simpler construction semantics.

Definition at line 47 of file optionalData.H.

Constructor & Destructor Documentation

optionalData() [1/5]

optionalData ( const optionalData< T > &  )

default

Copy construct.

optionalData() [2/5]

optionalData ( optionalData< T > &&  )

default

Move construct.

optionalData() [3/5]

optionalData ( )

inline

Default construct.

Definition at line 78 of file optionalData.H.

optionalData() [4/5]

optionalData ( const T &  val )

inline

Copy construct from value.

Definition at line 85 of file optionalData.H.

optionalData() [5/5]

optionalData ( T &&  val )

inline

Move construct from value.

Definition at line 92 of file optionalData.H.

Member Function Documentation

operator=() [1/4]

optionalData<T>& operator= ( const optionalData< T > &  )

default

Copy assignment.

operator=() [2/4]

optionalData<T>& operator= ( optionalData< T > &&  )

default

Move assignment.

has_value()

bool has_value ( ) const

inlinenoexcept

True if it has a value.

Definition at line 102 of file optionalData.H.

value() [1/2]

T& value ( )

inlinenoexcept

Access to the value.

Definition at line 108 of file optionalData.H.

value() [2/2]

const T& value ( ) const

inlinenoexcept

Access to the value.

Definition at line 114 of file optionalData.H.

value_or()

const T& value_or ( const T &  deflt ) const

inline

Return value or default.

Definition at line 120 of file optionalData.H.

operator bool()

operator bool ( ) const

inlineexplicitnoexcept

True if it has a value.

Definition at line 129 of file optionalData.H.

operator*() [1/2]

const T& operator* ( ) const

inlinenoexcept

Access the value.

Definition at line 135 of file optionalData.H.

operator*() [2/2]

T& operator* ( )

inlinenoexcept

Access the value.

Definition at line 141 of file optionalData.H.

operator=() [3/4]

void operator= ( const T &  val )

inline

Copy assignment from value.

Definition at line 147 of file optionalData.H.

operator=() [4/4]

void operator= ( T &&  val )

inline

Move assignment from value.

Definition at line 154 of file optionalData.H.

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

• applications/utilities/preProcessing/PDR/pdrFields/optionalData/optionalData.H