Node::Subscriber Class Reference

A class that is used to store information about an subscriber. An instance of this class is returned from Node::CreateSubscribe. When the object is destroyed, the corresponding subscription handler is removed from the node. More...

#include <Node.hh>

Public Member Functions
	Subscriber ()
	Default constructor.
	Subscriber (const std::string &_topic, const std::string &_nUuid, const NodeOptions &_nOpts, const std::string &_hUuid)
	Constructor.
	Subscriber (Subscriber &&_other)
	Move constructor.
virtual	~Subscriber ()
	Destructor. Unsubscribe to the topic and remove the subcription handler.
	operator bool ()
	Allows this class to be evaluated as a boolean.
	operator bool () const
	Allows this class to be evaluated as a boolean (const).
Node::Subscriber &	operator= (Subscriber &&_other)
	Move assignment operator.
bool	Unsubscribe ()
	Unsubscribe from the topic.
bool	Valid () const
	Return true if valid information, such as a non-empty topic name, node and handler UUIDs.

Detailed Description

A class that is used to store information about an subscriber. An instance of this class is returned from Node::CreateSubscribe. When the object is destroyed, the corresponding subscription handler is removed from the node.

Pseudo code example

std::function<void(const msgs::Int32 &)> cb = [](const msgs::Int32 &) { // Do something }; Node::Subscriber sub = myNode.CreateSubscriber("topic_name", cb);

Constructor & Destructor Documentation

Subscriber() [1/3]

Subscriber

(

)

Default constructor.

Subscriber() [2/3]

Subscriber	(	const std::string &	_topic,
		const std::string &	_nUuid,
		const NodeOptions &	_nOpts,
		const std::string &	_hUuid
	)

Constructor.

Parameters

[in]	_topic	Subscribed topic name
[in]	_nUuid	Node to which this subscriber belongs
[in]	_nOpts	Node options for the node
[in]	_hUuid	Subscriber's handler UUID

~Subscriber()

virtual ~Subscriber ( )

virtual

Destructor. Unsubscribe to the topic and remove the subcription handler.

Subscriber() [3/3]

Subscriber

(

Subscriber &&

_other

)

Move constructor.

Parameters

[in]

_other

The other Node::Subscriber

Member Function Documentation

operator bool() [1/2]

operator bool

(

)

Allows this class to be evaluated as a boolean.

Returns

True if valid

See also

Valid

operator bool() [2/2]

operator bool

(

)

const

Allows this class to be evaluated as a boolean (const).

Returns

True if valid

See also

Valid

operator=()

Node::Subscriber & operator=

(

Subscriber &&

_other

)

Move assignment operator.

Parameters

[in]

_other

The other Node::Subscriber

Returns

Reference to this

Unsubscribe()

bool Unsubscribe

(

)

Unsubscribe from the topic.

Returns

True if the topic was successfully unsubscribed

Valid()

bool Valid

(

)

const

Return true if valid information, such as a non-empty topic name, node and handler UUIDs.

Returns

True if this object has a valid subscription.

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

• Node.hh