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Re: Brython - Python in the browser

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Date Sun, 23 Dec 2012 08:49:31 +1100
Subject Re: Brython - Python in the browser
From Chris Angelico <rosuav@gmail.com>
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On Sun, Dec 23, 2012 at 7:31 AM, Dan Sommers <dan@tombstonezero.net> wrote:
> On Sat, 22 Dec 2012 23:11:00 +1100, Chris Angelico wrote:
>
>> "This is a string" / 3 ==> ["This ", "is a ", "strin", "g"]
>> and "This is a string" // 3 ==> ["This ", "is a ", "strin"]
>> then "This is a string" % 3 ==> ["g"] or possibly "g"
>>
>> which is incompatible with current usage. But that's a meaning that
>> makes reasonable sense as "modulo".
>
> So why are we all so comfortable with using "*" as the operator for
> multiplication?  I'm sure that a new programming language that dared to
> use U+00D7 or U+2715 for multiplication would be instantly rejected on
> the grounds that it was confusing and incompatible with current practice.

Less on the confusing and more on the hard to type; same reason we
don't indicate division by writing a long bar, but use the slash
instead. Also, algebra has a tendency toward short variable names,
where programming tends toward longer ones, so algebra optimizes in
favour of multiplication - that's why we don't write code like
"h{ello}w{orld}" to mean "multiply hello by world".

> Until recently, the number of characters available to a programming
> language was limited (APL notwithstanding).

REXX had two boolean negation operators, one of which wasn't ASCII.

> Practicality beat (paste tense) purity.

Yep. Definitely. We need to be able to type code fast, read code fast,
and worry about algebra slowly. Arguments from algebra are mainly for
justifying a new piece of syntax so people can understand it without
having to keep the manual open beside them.

ChrisA

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Thread

Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-19 10:19 -0800
  Re: Brython - Python in the browser jkn <jkn_gg@nicorp.f9.co.uk> - 2012-12-19 14:59 -0800
  Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-19 19:07 -0500
    Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:37 -0800
      Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-20 20:56 +1100
      Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-20 18:59 -0500
        Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-21 02:05 +0000
          Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-21 16:07 +1100
        Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:16 -0800
          Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 17:52 +0100
          Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 11:31 -0700
            Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 12:59 -0800
              Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 14:17 -0700
            Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 12:59 -0800
        Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:16 -0800
      Re: Brython - Python in the browser Rouslan Korneychuk <rouslank@msn.com> - 2012-12-21 03:31 -0500
        Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-21 04:44 -0500
    Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:37 -0800
  Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-19 17:54 -0700
    Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:42 -0800
      Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 12:25 +0100
        Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 04:38 -0800
          Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-21 23:57 +1100
            Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 07:36 -0800
              Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 02:48 +1100
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:36 -0800
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 09:52 +1100
                Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:45 -0700
                Re: Brython - Python in the browser Amirouche Boubekki <amirouche.boubekki@gmail.com> - 2012-12-22 00:50 +0100
                Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:51 -0700
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:59 -0800
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:59 -0800
                Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-21 16:57 -0700
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 11:08 +1100
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:57 -0800
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 19:31 +1100
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 00:54 -0800
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 20:08 +1100
                Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-22 11:05 +0000
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 23:11 +1100
                Re: Brython - Python in the browser Dan Sommers <dan@tombstonezero.net> - 2012-12-22 20:31 +0000
                Re: Brython - Python in the browser Ian Kelly <ian.g.kelly@gmail.com> - 2012-12-22 13:53 -0700
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-23 08:49 +1100
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 00:54 -0800
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 23:57 -0800
                Re: Brython - Python in the browser Chris Angelico <rosuav@gmail.com> - 2012-12-22 11:09 +1100
                Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 08:36 -0800
            Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 07:36 -0800
          Re: Brython - Python in the browser Duncan Booth <duncan.booth@invalid.invalid> - 2012-12-21 13:14 +0000
            Re: Brython - Python in the browser Stefan Behnel <stefan_ml@behnel.de> - 2012-12-21 14:34 +0100
        Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-21 04:38 -0800
        Re: Brython - Python in the browser Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-12-22 02:31 +0000
    Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-20 01:42 -0800
  Re: Brython - Python in the browser Terry Reedy <tjreedy@udel.edu> - 2012-12-19 21:46 -0500
  Re: Brython - Python in the browser Jamie Paul Griffin <jamie@kode5.net> - 2012-12-20 11:32 +0000
  Re: Brython - Python in the browser Pierre Quentel <pierre.quentel@gmail.com> - 2012-12-22 01:01 -0800

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