Python-сообщество

tz4678@gmail.com · Апрель 24, 2015 17:31:32

vanished

Отредактировано tz4678@gmail.com (Авг. 1, 2020 15:49:23)

terabayt · Апрель 24, 2015 18:45:01

class Event:
    def __init__(self):
        self.callbacks = set()
    def connect(self, callback): 
        self.callbacks.add(callback)
        return self
    def disconnect(self, callback):
        self.callbacks.remove(callback)
    def emit(self, *args, **kwargs):
        for callback in self.callbacks:
            callback(*args, **kwargs)
    def clearCallbacks(self):
        self.callbacks.clear()
    __iadd__ = connect
    __isub__ = disconnect
    __call__ = emit
if __name__ == '__main__':
    def foo():
        print('foo')
    event = Event()
    event += foo
    event()

————————————————
-*- Simple is better than complex -*-

tz4678@gmail.com · Апрель 24, 2015 20:36:18

vanished

Отредактировано tz4678@gmail.com (Авг. 1, 2020 15:49:25)

terabayt · Апрель 24, 2015 20:58:25

tz4678@gmail.com и?

————————————————
-*- Simple is better than complex -*-

Suguby27 · Апрель 27, 2015 12:33:20

У вас connect ничего не возвращает и поэтому после event += foo event становится равен None

Багфикс

class Event:
    def __init__(self):
        self.callbacks = set()
    def connect(self, callback): 
        self.callbacks.add(callback)
        return self 
    def disconnect(self, callback):
        self.callbacks.remove(callback)
        return self
    def emit(self, *args, **kwargs):
        for callback in self.callbacks:
            callback(*args, **kwargs)
    def clearCallbacks(self):
        self.callbacks.clear()
    __iadd__ = connect
    __isub__ = disconnect
    __call__ = emit
if __name__ == '__main__':
    def foo():
        print('foo')
    event = Event()
    event += foo
    event()

Python-сообщество

Уведомления

#1 Апрель 24, 2015 17:31:32

vanished

#2 Апрель 24, 2015 18:45:01

vanished

#3 Апрель 24, 2015 20:36:18

vanished

#4 Апрель 24, 2015 20:58:25

vanished

#5 Апрель 27, 2015 12:33:20

vanished

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