boost::attributes::constant< T > Class Template Reference

A class of an attribute that holds a single constant value. More...

#include <constant.hpp>

Inheritance diagram for boost::attributes::constant< T >:

Collaboration diagram for boost::attributes::constant< T >:

Classes
class	impl
	Factory implementation. More...

Public Types
typedef T	value_type
	Attribute value type. More...

Public Member Functions
	constant (value_type const &value)
	Constructor with the stored value initialization. More...
	constant (BOOST_RV_REF(value_type) value)
	Constructor with the stored value initialization. More...
	constant (cast_source const &source)
	Constructor for casting support. More...
value_type const &	get () const
bool	operator! () const BOOST_NOEXCEPT
	Verifies that the factory is not in empty state. More...
attribute_value	get_value () const
void	swap (attribute &that) BOOST_NOEXCEPT
	The method swaps two factories (i.e. More...

Protected Member Functions
impl *	get_impl () const BOOST_NOEXCEPT
void	set_impl (intrusive_ptr< impl > p) BOOST_NOEXCEPT
	Sets the pointer to the factory implementation. More...

Detailed Description

template<typename T>
class boost::attributes::constant< T >

A class of an attribute that holds a single constant value.

The constant is a simplest and one of the most frequently used types of attributes. It stores a constant value, which it eventually returns as its value each time requested.

Member Typedef Documentation

template<typename T>

typedef T boost::attributes::constant< T >::value_type

Attribute value type.

Constructor & Destructor Documentation

template<typename T>

boost::attributes::constant< T >::constant ( value_type const &  value )

inlineexplicit

Constructor with the stored value initialization.

template<typename T>

boost::attributes::constant< T >::constant ( BOOST_RV_REF(value_type)  value )

inlineexplicit

Constructor with the stored value initialization.

template<typename T>

boost::attributes::constant< T >::constant ( cast_source const &  source )

inlineexplicit

Constructor for casting support.

Member Function Documentation

template<typename T>

value_type const& boost::attributes::constant< T >::get ( ) const

inline

Returns

Reference to the contained value.

impl* boost::attribute::get_impl ( ) const

inlineprotectedinherited

Returns

The pointer to the implementation

References boost::intrusive_ptr< T >::get().

Referenced by boost::attribute_cast(), boost::attributes::constant< process_id >::get(), boost::attributes::mutable_constant< channel_type >::get_impl(), and boost::attributes::mutable_constant< T, void, void, void >::get_impl().

attribute_value boost::attribute::get_value ( ) const

inherited

Returns

The actual attribute value. It shall not return empty values (exceptions shall be used to indicate errors).

bool boost::attribute::operator! ( ) const

inlineinherited

Verifies that the factory is not in empty state.

Verifies that the factory is in empty state

void boost::attribute::set_impl ( intrusive_ptr< impl >  p )

inlineprotectedinherited

Sets the pointer to the factory implementation.

Parameters

p	Pointer to the implementation. Must not be NULL.

References boost::multiprecision::backends::p, and boost::intrusive_ptr< T >::swap().

Referenced by boost::attributes::counter< T >::counter().

void boost::attribute::swap ( attribute &  that )

inlineinherited

The method swaps two factories (i.e.

their implementations).

References boost::intrusive_ptr< T >::swap().

Referenced by boost::sources::aux::severity_level< severity_level >::operator=(), and boost::sources::basic_severity_logger< BaseT, LevelT >::swap_unlocked().

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

• boost_1_57_0/boost/log/attributes/constant.hpp