#Nodejs events series

Return a copy of the private listeners array. respond () # Prints # hi from test_fn EventListenerStack. The EventListenerStack class is defined and exposed publicly by the module: from node_events import EventListenerStack def test_fn (): print ( 'hi from test_fn' ) stack = EventListenerStack ( 'event_name' ) stack.

#Nodejs events series

Serves as an interfacing remote for series of grouped listeners Stacking layer of listeners for an event defined named eventName Useful in finding the instance amongst others by matching its core Class: EventListenerStack(eventName) verify(fn)Д¬heck if fn matches with the encapsulated function Send the data arguments to the encapsulated function in evaluation EventListener. Number of times the function has been called EventListener. respond () # Prints # test_fn EventListener. The EventListener class is defined and exposed publicly by the module: from node_events import EventListener def fn (): print ( 'test_fn' ) EventListener ( fn ).

This class wraps the listener function with useful, sandboxed manipulative features Implements the EventListenerStack::hasListeners() inherently. Safely check that the core EventListenerStack has at least one listener. If raiseException is True, raise an exception if the result of the check evaluates to False. hasEvent(eventName, raiseException)Д¬heck if the event emitter has within itself an event named eventName, return a boolean for the operation. addListener(eventName, listener)Д®mits the 'addlistener:' event when called. The EventEmitter class is defined and exposed publicly by the module: from node_events import EventEmitter EventEmitter. emit ( 'event' ) # Prints # An event occurred API Class: EventEmitter

Usage from node_events import EventEmitter myEmitter = EventEmitter () def fn (): print ( 'An event occurred' ) myEmitter. A minor rewrite of the NodeJS EventEmitter in Python