"Ian Kelly" <[EMAIL PROTECTED]> writes: > On Tue, May 20, 2008 at 11:19 AM, John Salerno <[EMAIL PROTECTED]> wrote: >> "Diez B. Roggisch" <[EMAIL PROTECTED]> wrote in message >> news:[EMAIL PROTECTED] >>> After being corrected about missing the construction of a None-containing >>> list, one needs of course to think about the waste of resources, as a >>> possible result-list is created in any case. >> >> Yeah, I was already aware of the list of Nones, which is why I asked. Simply >> typing the list comprehension without an assignment just *looked* wrong, >> too. > > It sounds like the wasteful list creation is the biggest objection to > using a list comprehension. I'm curious what people think of this > alternative, which avoids populating the list by using a generator > expression instead (apart from the fact that this is still quadratic, > which I'm aware of). > > def compress(s): > new = [] > filter(None, (new.append(c) for c in s if c not in new)) > return ''.join(new)
This is crazy! -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
