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Groups > comp.lang.python > #48727
| References | <9150d9b7-e488-4f9f-beff-4a140bcc78f0@googlegroups.com> <e536e8b0-c0ad-4a76-b17b-11f602f60338@googlegroups.com> |
|---|---|
| Date | 2013-06-20 02:39 +1000 |
| Subject | Re: Idea for key parameter in all() builting, would it be feasible? |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.3586.1371659978.3114.python-list@python.org> (permalink) |
On Thu, Jun 20, 2013 at 2:32 AM, <russ.pobox@gmail.com> wrote: >>All you need is the iterator version of map(). In Python 3, that's the >>normal map(); in Python 2, use this: > >>>>> from itertools import imap >>>>> all(imap(lambda x: bool(x), xrange(10**9))) >>False > >>It's roughly instant, like you would expect. > >>ChrisA > > This probably isn't the way to post a reply on your own thread (I added an angle bracket to every line above :P) but last time clicked reply to author not knowing that is email. Anyways... If you're getting this via the mailing list, just hit Reply, and then change the To: address to python-list@python.org - that's the simplest (assuming you don't have a Reply To List feature, but you wouldn't be saying the above if you had one). That way, you get a citation line, quoted text is marked, and it's taken a minimum of effort. > Thanks, I like itertools but had no idea imap. Although I did suspect Python3 would have something to say about this just to make me envious :D > > It works like a charm! Awesome! Hey, if you *can* switch to Py3, do try to. It has heaps of improvements, and it has a future. :) ChrisA
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Idea for key parameter in all() builting, would it be feasible? russ.pobox@gmail.com - 2013-06-19 09:14 -0700
Re: Idea for key parameter in all() builting, would it be feasible? Chris Angelico <rosuav@gmail.com> - 2013-06-20 02:20 +1000
Re: Idea for key parameter in all() builting, would it be feasible? russ.pobox@gmail.com - 2013-06-19 09:32 -0700
Re: Idea for key parameter in all() builting, would it be feasible? Chris Angelico <rosuav@gmail.com> - 2013-06-20 02:39 +1000
Re: Idea for key parameter in all() builting, would it be feasible? Russel Walker <russ.pobox@gmail.com> - 2013-06-20 03:05 -0700
Re: Idea for key parameter in all() builting, would it be feasible? Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2013-06-20 12:45 +0200
Re: Idea for key parameter in all() builting, would it be feasible? Russel Walker <russ.pobox@gmail.com> - 2013-06-20 07:49 -0700
Re: Idea for key parameter in all() builting, would it be feasible? Chris Angelico <rosuav@gmail.com> - 2013-06-21 01:48 +1000
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