QVariant::ConstReference< Indirect > Class Template Reference

The QVariant::ConstReference acts as a const reference to a QVariant. More...

#include <qvariant.h>

Collaboration diagram for QVariant::ConstReference< Indirect >:

Public Member Functions
	ConstReference (const Indirect &referred) noexcept(std::is_nothrow_copy_constructible_v< Indirect >)
	Creates a QVariant::ConstReference from a referred.
	ConstReference (Indirect &&referred) noexcept(std::is_nothrow_move_constructible_v< Indirect >)
	Creates a QVariant::ConstReference from a referred.
	ConstReference (const ConstReference &) noexcept(std::is_nothrow_copy_constructible_v< Indirect >)=default
	ConstReference (ConstReference &&)=delete
	ConstReference (const Reference< Indirect > &) noexcept(std::is_nothrow_copy_constructible_v< Indirect >)
	Creates a QVariant::ConstReference from a nonConst Reference.
	~ConstReference ()=default
ConstReference &	operator= (const ConstReference &value)=delete
ConstReference &	operator= (ConstReference &&value)=delete
	operator QVariant () const noexcept(Indirect::CanNoexceptConvertToQVariant)
	Dereferences the reference to a QVariant.
	operator QVariant () const
	operator QVariant () const

Friends
class	Reference< Indirect >

Detailed Description

template<typename Indirect>
class QVariant::ConstReference< Indirect >

The QVariant::ConstReference acts as a const reference to a QVariant.

Since

6.11 \inmodule QtCore

As the generic iterators don't actually instantiate a QVariant on each step, they cannot return a reference to one from operator*(). QVariant::ConstReference<Indirect> provides the same functionality as an actual reference to a QVariant would, but is backed by a referred-to value of type Indirect. The template is implemented for QMetaSequence::ConstIterator, QMetaSequence::Iterator, QMetaAssociation::ConstIterator, and QMetaAssociation::Iterator.

Definition at line 237 of file qvariant.h.

Constructor & Destructor Documentation

ConstReference() [1/5]

template<typename Indirect>

QVariant::ConstReference< Indirect >::ConstReference ( const Indirect & referred )

inlineexplicitnoexcept

Creates a QVariant::ConstReference from a referred.

Definition at line 246 of file qvariant.h.

ConstReference() [2/5]

template<typename Indirect>

QVariant::ConstReference< Indirect >::ConstReference ( Indirect && referred )

inlineexplicitnoexcept

Creates a QVariant::ConstReference from a referred.

Definition at line 249 of file qvariant.h.

ConstReference() [3/5]

template<typename Indirect>

QVariant::ConstReference< Indirect >::ConstReference ( const ConstReference< Indirect > & ) const

defaultnoexcept

ConstReference() [4/5]

template<typename Indirect>

QVariant::ConstReference< Indirect >::ConstReference ( ConstReference< Indirect > && )

delete

ConstReference() [5/5]

template<typename Indirect>

QVariant::ConstReference< Indirect >::ConstReference ( const Reference< Indirect > & nonConst )

inlinenoexcept

Creates a QVariant::ConstReference from a nonConst Reference.

Definition at line 929 of file qvariant.h.

~ConstReference()

template<typename Indirect>

QVariant::ConstReference< Indirect >::~ConstReference ( )

default

Member Function Documentation

operator QVariant() [1/3]

QVariant::ConstReference< QtMetaContainerPrivate::AssociativeConstIterator >::operator QVariant ( ) const

inline

Definition at line 116 of file qmetaassociation.h.

operator QVariant() [2/3]

QVariant::ConstReference< QtMetaContainerPrivate::SequentialConstIterator >::operator QVariant ( ) const

inline

Definition at line 84 of file qmetasequence.h.

operator QVariant() [3/3]

template<typename Indirect>

QVariant::ConstReference< Indirect >::operator QVariant ( ) const

noexcept

Dereferences the reference to a QVariant.

This method needs to be specialized for each Indirect type. It is pre-defined for QMetaSequence::ConstIterator, QMetaSequence::Iterator, QMetaAssociation::ConstIterator, and QMetaAssociation::Iterator.

operator=() [1/2]

template<typename Indirect>

ConstReference & QVariant::ConstReference< Indirect >::operator= ( const ConstReference< Indirect > & value )

delete

operator=() [2/2]

template<typename Indirect>

ConstReference & QVariant::ConstReference< Indirect >::operator= ( ConstReference< Indirect > && value )

delete

Friends And Related Symbol Documentation

Reference< Indirect >

template<typename Indirect>

friend class Reference< Indirect >

friend

Definition at line 117 of file qvariant.h.

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

• qtbase/src/corelib/kernel/qvariant.h (666ffea9ad2826b83ab176b41d692649703c6b73)
• qtbase/src/corelib/kernel/qvariant.cpp (3fc10267a2b46d4a2894a4531af0efd335a8ba9c)