01.05.20 01:23, Paul Ganssle пише:
class LazyList:
def __init__(self, some_iterator):
self._iter = some_iterator
self._list = None
@call_once
def as_list(self):
self._list = list(self._iter)
return self._list
call_once is not applicable here, because it is only for functions which
do not have arguments, but as_list() takes the self argument.
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