bsltf::ArgumentTypeByValue< N > Class Template Reference

#include <bsltf_argumenttype.h>

Inheritance diagram for bsltf::ArgumentTypeByValue< N >:

Public Member Functions
	ArgumentTypeByValue (ArgumentTypeDefault=ArgumentTypeDefault())
	ArgumentTypeByValue (ArgumentType< N > const &original)
	ArgumentTypeByValue (ArgumentType< N > &original)
	ArgumentTypeByValue (bslmf::MovableRef< ArgumentType< N > > original)
Public Member Functions inherited from bsltf::ArgumentType< N >
	ArgumentType (ArgumentTypeDefault=ArgumentTypeDefault())
	ArgumentType (int value)
	ArgumentType (ArgumentType &original)
	ArgumentType (ArgumentType const &original)
	ArgumentType (bslmf::MovableRef< ArgumentType > original)
	~ArgumentType ()
	Destroy this object.
ArgumentType &	operator= (ArgumentType &rhs)
ArgumentType &	operator= (ArgumentType const &rhs)
ArgumentType &	operator= (bslmf::MovableRef< ArgumentType > rhs)
ArgumentType &	operator= (int rhs)
void	reset ()
void	set (int value, CopyMoveState::Enum state)
	Set this object to the default-constructed state.
	operator int () const
	Return the value of this object.
CopyMoveState::Enum	copyMoveState () const
	Return the copy/move state of this object.
MoveState::Enum	movedFrom () const
MoveState::Enum	movedInto () const

Detailed Description

template<int N>
class bsltf::ArgumentTypeByValue< N >

This class works around a limitation in C++03 whereby initializing a pass-by-value parameter of type bslmf::ArgumentType<N> from a MovableRef<bslmf::ArgumentType<N> > results in an ambiguous conversion sequence (i.e., MovableRef::operator T& vs. ArgumentType(MovableRef) are equally good conversions). Pass-by-value use cases (e.g., recording the value category of multiple function arguments) can use this class as a parameter type, instead, eliminating the ambiguity because MovableRef<AT> -> AT& -> ArgumentTypeByValue requires two user-defined conversions and is therefore eliminated during overload resolution.

See bsltf_argumenttype

Constructor & Destructor Documentation

ArgumentTypeByValue() [1/4]

template<int N>

bsltf::ArgumentTypeByValue< N >::ArgumentTypeByValue ( ArgumentTypeDefault  = ArgumentTypeDefault() )

inline

ArgumentTypeByValue() [2/4]

template<int N>

bsltf::ArgumentTypeByValue< N >::ArgumentTypeByValue ( ArgumentType< N > const &  original )

inline

ArgumentTypeByValue() [3/4]

template<int N>

bsltf::ArgumentTypeByValue< N >::ArgumentTypeByValue ( ArgumentType< N > &  original )

inline

ArgumentTypeByValue() [4/4]

template<int N>

bsltf::ArgumentTypeByValue< N >::ArgumentTypeByValue ( bslmf::MovableRef< ArgumentType< N > >  original )

inline

Initialize the ArgumentType<N> base object from the specified original.

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

• bsltf_argumenttype.h