caf::flow::op::empty< T > Class Template Reference

An observable that represents an empty range. More...

#include <empty.hpp>

Inheritance diagram for caf::flow::op::empty< T >:

Public Types
using	super = cold< T >
using	output_type = T
Public Types inherited from caf::flow::op::cold< T >
using	output_type = T
Public Types inherited from caf::flow::op::base< T >
using	output_type = T
	The type of observed values.

Public Member Functions
	empty (coordinator *ctx)
disposable	subscribe (observer< output_type > out) override
	Subscribes a new observer to the operator.
Public Member Functions inherited from caf::flow::op::cold< T >
	cold (coordinator *ctx)
void	ref_coordinated () const noexcept override
	Increases the reference count of the coordinated.
void	deref_coordinated () const noexcept override
	Decreases the reference count of the coordinated and destroys the object if necessary.
coordinator *	ctx () const noexcept override
	Returns the coordinator that executes this flow operator.
Public Member Functions inherited from caf::detail::atomic_ref_counted
	atomic_ref_counted (const atomic_ref_counted &)
atomic_ref_counted &	operator= (const atomic_ref_counted &)
void	ref () const noexcept
	Increases reference count by one.
void	deref () const noexcept
	Decreases reference count by one and calls request_deletion when it drops to zero.
bool	unique () const noexcept
	Queries whether there is exactly one reference.
size_t	get_reference_count () const noexcept
	Queries the current reference count for this object.
virtual coordinator *	ctx () const noexcept=0
	Returns the coordinator that executes this flow operator.
virtual disposable	subscribe (observer< T > what)=0
	Subscribes a new observer to the operator.
virtual void	ref_coordinated () const noexcept=0
	Increases the reference count of the coordinated.
virtual void	deref_coordinated () const noexcept=0
	Decreases the reference count of the coordinated and destroys the object if necessary.

Additional Inherited Members
Protected Attributes inherited from caf::flow::op::cold< T >
coordinator *	ctx_
Protected Attributes inherited from caf::detail::atomic_ref_counted
std::atomic< size_t >	rc_

Detailed Description

template<class T>
class caf::flow::op::empty< T >

An observable that represents an empty range.

As soon as an observer requests values from this observable, it calls on_complete.

Member Function Documentation

subscribe()

template<class T >

disposable caf::flow::op::empty< T >::subscribe ( observer< output_type >  what )

overridevirtual

Subscribes a new observer to the operator.

Implements caf::flow::op::base< T >.

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

• libcaf_core/caf/flow/op/empty.hpp