pulp::state::ObservableValue< T > Class Template Reference

Observable value — wraps a single value with change notification. More...

#include <state_tree.hpp>

Public Types
using	ChangeListener = std::function<void(const T& old_val, const T& new_val)>

Public Member Functions
	ObservableValue ()=default
	ObservableValue (T initial)
const T &	get () const
	operator const T & () const
void	set (T new_value)
ObservableValue &	operator= (T new_value)
int	add_listener (ChangeListener fn)
void	remove_listener (int id)

Detailed Description

template<typename T>
class pulp::state::ObservableValue< T >

Observable value — wraps a single value with change notification.

Thread-safety contract: NOT thread-safe. Every method (get, set, add_listener, remove_listener) touches non-atomic members without internal locking. Caller must serialize. Same model as StateTree.

Member Typedef Documentation

ChangeListener

template<typename T>

using pulp::state::ObservableValue< T >::ChangeListener = std::function<void(const T& old_val, const T& new_val)>

Constructor & Destructor Documentation

ObservableValue() [1/2]

template<typename T>

pulp::state::ObservableValue< T >::ObservableValue ( )

default

ObservableValue() [2/2]

template<typename T>

pulp::state::ObservableValue< T >::ObservableValue ( T initial )

inlineexplicit

Member Function Documentation

add_listener()

template<typename T>

int pulp::state::ObservableValue< T >::add_listener ( ChangeListener fn )

inline

get()

template<typename T>

const T & pulp::state::ObservableValue< T >::get ( ) const

inline

operator const T &()

template<typename T>

pulp::state::ObservableValue< T >::operator const T & ( ) const

inline

operator=()

template<typename T>

ObservableValue & pulp::state::ObservableValue< T >::operator= ( T new_value )

inline

remove_listener()

template<typename T>

void pulp::state::ObservableValue< T >::remove_listener ( int id )

inline

set()

template<typename T>

void pulp::state::ObservableValue< T >::set ( T new_value )

inline

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

• /home/runner/work/pulp/pulp/core/state/include/pulp/state/state_tree.hpp