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Re: pygame - importing GL - very bad...

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Date Sat, 5 Jan 2013 22:47:17 +1100
Subject Re: pygame - importing GL - very bad...
From Chris Angelico <rosuav@gmail.com>
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On Sat, Jan 5, 2013 at 9:49 PM, someone <newsboost@gmail.com> wrote:
> Ok, I think you're right. At least I find that C-compilers catches many
> errors/warnings which python don't say anything about. But also C require me
> to define/declarer the types of variables before I use them... OTOH I guess
> I like that python is faster to code in, compared to C...

C has typed variables, so it's a compile-time error to try to put any
other type into that variable. Python doesn't. That flexibility comes
at the cost of error-catching. There are hybrid systems, but in
general, type declarations imply variable declarations, and that's
something that Python doesn't want. (I'm of the opinion that
declarations aren't such a bad thing; they make some aspects of
scoping easier. However, that's a design decision that Python is as
unlikely to reverse as indentation-defined blocks.)

> Ok, I'll look forward to that. Recently I had some problems with
> pass-by-value vs pass-by-reference. I googled the problem and found that by
> default python passes by reference.

No, it doesn't. You can find good references on the subject in various
places, but call-by-reference as implemented in Pascal simply doesn't
exist in most modern languages, because its semantics are way
confusing. The name given to this technique varies; here's a couple of
links:

http://effbot.org/zone/call-by-object.htm
http://en.wikipedia.org/wiki/Evaluation_strategy#Call_by_sharing

ChrisA

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Thread

pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-01 12:00 +0100
  Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-01 22:13 +1100
    Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 00:49 +0100
      Re: pygame - importing GL - very bad... Michael Torrie <torriem@gmail.com> - 2013-01-02 14:57 -0700
        Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 02:53 +0100
          Re: pygame - importing GL - very bad... "Mike C. Fletcher" <mcfletch@vrplumber.com> - 2013-01-03 09:09 -0500
            Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 02:10 +0100
              Re: pygame - importing GL - very bad... Dave Angel <d@davea.name> - 2013-01-04 20:30 -0500
                Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 11:49 +0100
                Re: pygame - importing GL - very bad... Dave Angel <d@davea.name> - 2013-01-05 06:23 -0500
                Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-05 22:47 +1100
                Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 14:06 +0100
                Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-06 00:27 +1100
                Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 20:49 +0100
                Re: pygame - importing GL - very bad... alex23 <wuwei23@gmail.com> - 2013-01-06 03:37 -0800
                Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-06 13:46 +0100
      Re: pygame - importing GL - very bad... Andrew Berg <bahamutzero8825@gmail.com> - 2013-01-02 16:30 -0600
        Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 03:02 +0100
  Re: pygame - importing GL - very bad... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-01-01 11:49 +0000
    Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 00:49 +0100
      Re: pygame - importing GL - very bad... Nobody <nobody@nowhere.com> - 2013-01-02 03:01 +0000
        Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 04:43 +0100
        Re: pygame - importing GL - very bad... alex23 <wuwei23@gmail.com> - 2013-01-02 01:52 -0800
          Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 15:04 +0100
      Re: pygame - importing GL - very bad... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-01-02 07:39 +0000
        Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 15:06 +0100
  Re: pygame - importing GL - very bad... Peter Otten <__peter__@web.de> - 2013-01-01 13:56 +0100
    Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 00:50 +0100
      pylint, was Re: pygame - importing GL - very bad... Peter Otten <__peter__@web.de> - 2013-01-02 13:07 +0100
        Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 15:09 +0100
          Re: pylint, was Re: pygame - importing GL - very bad... Dave Angel <d@davea.name> - 2013-01-02 09:26 -0500
            Re: pylint, was Re: pygame - importing GL - very bad... Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-01-02 23:52 +0000
              Re: pylint, was Re: pygame - importing GL - very bad... Ian Kelly <ian.g.kelly@gmail.com> - 2013-01-02 17:25 -0700
              Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 03:24 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... Terry Reedy <tjreedy@udel.edu> - 2013-01-02 21:48 -0500
                Re: pylint, was Re: pygame - importing GL - very bad... Ian Kelly <ian.g.kelly@gmail.com> - 2013-01-02 19:55 -0700
                Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 12:19 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-03 22:27 +1100
                Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 02:11 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... Jan Riechers <janpeterr@freenet.de> - 2013-01-05 14:49 +0200
                Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 14:09 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... Ben Finney <ben+python@benfinney.id.au> - 2013-01-03 17:01 +1100
                Re: pylint, was Re: pygame - importing GL - very bad... Chris Rebert <clp2@rebertia.com> - 2013-01-02 22:33 -0800
                Re: pylint, was Re: pygame - importing GL - very bad... Peter Otten <__peter__@web.de> - 2013-01-03 10:00 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 12:21 +0100
                Regular expression syntax, was Re: pylint, was Re: pygame - importing GL - very bad... Peter Otten <__peter__@web.de> - 2013-01-03 12:39 +0100
                Re: Regular expression syntax, was Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 02:12 +0100
                Re: pylint, was Re: pygame - importing GL - very bad... "Mike C. Fletcher" <mcfletch@vrplumber.com> - 2013-01-03 09:19 -0500
                Re: pylint, was Re: pygame - importing GL - very bad... Terry Reedy <tjreedy@udel.edu> - 2013-01-03 11:52 -0500
                Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 02:14 +0100
            Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 03:06 +0100
      Re: pylint, was Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-03 01:32 +1100
      Re: pylint, was Re: pygame - importing GL - very bad... Ian Kelly <ian.g.kelly@gmail.com> - 2013-01-02 10:52 -0700
      Re: pylint, was Re: pygame - importing GL - very bad... Chris Angelico <rosuav@gmail.com> - 2013-01-03 04:57 +1100
      Re: pylint, was Re: pygame - importing GL - very bad... Ian Kelly <ian.g.kelly@gmail.com> - 2013-01-02 12:31 -0700
        Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-03 03:31 +0100
          Re: pylint, was Re: pygame - importing GL - very bad... Dave Angel <d@davea.name> - 2013-01-02 21:56 -0500
            Re: pylint, was Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-05 02:23 +0100
  Re: pygame - importing GL - very bad... alex23 <wuwei23@gmail.com> - 2013-01-01 14:39 -0800
    Re: pygame - importing GL - very bad... someone <newsboost@gmail.com> - 2013-01-02 00:56 +0100

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