crazy lambdas
Dan Parisien
dan at eevolved.com
Tue Feb 13 21:32:48 EST 2001
I want to do this
class Event:
def __init__(self):
self.callbacks = []
def trigger(self):
for i in self.callbacks:
i()
e = Event()
person = "me"
dict = {person:1}
e.callbacks.append(lambda d=dict, p=person: del d[p])
# .... later
e.trigger() #deletes
---
those who use lambdas alot will notice my mistake. I, however, do not know
what I am doing wrong. I think it has something to do with the fact 'del
d[p]' doesn't have a value...
Is it possible to do what I want (make a custom one-time-use function that
is called much later and deletes a key from a dictionary)?
thanks,
Dan
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