Re: Interpretowany czy kompilowany?

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#28072

From: Roman Dobosz
Date: Wed, 25 May 2011 18:20

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On Wed, 25 May 2011 01:01:55 -0700 (PDT)
jacek2v <jacek2v@gmail.com> wrote:

> lub tak: def find_user(users=[], properties={}):

To nie jest do końca dobry sposób:

>>> def foo(a, l=[]):
...     l.append(a)
...     return l
... 
>>> foo(1)
[1]
>>> foo(2)
[1, 2]
>>> foo(3)
[1, 2, 3]
>>> 

W pewnych warunkach, argumenty domyślne będące mutowalnymi obiektami
mogą zachowywać się w sposób nie taki, jaki wydawać by się mogło że
powinny. W takim przypadku lepiej inicjalizować Nonem i w docstringu
opisać czym dany argument jest.

-- 
      -^-  _        coś tam w tle sobie gra, np:
   _ /O)_\//        Hocico - cuando la maldad despierta
  (_(|__(_(_) grf.

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Path: mbox-mo1.pugleaf.net!news-archive.icm.edu.pl!news.rmf.pl!agh.edu.pl!news.agh.edu.pl!news.onet.pl!.POSTED!not-for-mail
From: Roman Dobosz <gryf_esm-no@spam-o2.pl>
Newsgroups: pl.comp.lang.python
Subject: Re: Interpretowany czy kompilowany?
Date: Wed, 25 May 2011 20:20:13 +0200
Organization: Elysium DeeZine
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