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Re: Bitten by my C/Java experience

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On 05/05/2015 09:19, Steven D'Aprano wrote:
> On Tuesday 05 May 2015 08:02, BartC wrote:

>> (I think I would have picked up "++" and "--" as special tokens even if
>> increment/decrement ops weren't supported. Just because they would
>> likely cause errors through misunderstanding.)
>
> Just because C made a mistake, doesn't mean other languages have to
> slavishly follow it.

I would have thought there was more rapport between the two languages. 
Python is often implemented in C and extensions are often implemented in 
C, suggesting there are quite a few people familiar with both, sometimes 
in areas that are critical (ie. creating code that will affect thousands 
of Python apps).

So why pretend that ++ and -- don't exist? After all Python borrows "=", 
"==" and "!=" from C.

(Writing a==b instead of a=b is less likely in Python than in a language 
where a=b is an equality test rather than assignment. But I've used just 
such a language where mistakenly writing a=b (which happens when 
switching between languages) caused difficult-to-find bugs.

Until I disallowed standalone expressions as statements, then these 
things are picked up, and they are invariably unintended errors. Where 
it is actually necessary to evaluate an expression and throw away the 
result, then a simple prefix can be used.)

-- 
Bartc

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Thread

Bitten by my C/Java experience Cecil Westerhof <Cecil@decebal.nl> - 2015-05-04 17:20 +0200
  Re: Bitten by my C/Java experience Tobiah <toby@tobiah.org> - 2015-05-04 10:18 -0700
  Re: Bitten by my C/Java experience Irmen de Jong <irmen.NOSPAM@xs4all.nl> - 2015-05-04 19:32 +0200
    Re: Bitten by my C/Java experience Chris Angelico <rosuav@gmail.com> - 2015-05-05 03:40 +1000
      Re: Bitten by my C/Java experience albert@spenarnc.xs4all.nl (Albert van der Horst) - 2015-05-08 10:47 +0000
        Re: Bitten by my C/Java experience Chris Angelico <rosuav@gmail.com> - 2015-05-08 21:32 +1000
  Re: Bitten by my C/Java experience Ian Kelly <ian.g.kelly@gmail.com> - 2015-05-04 11:43 -0600
    Re: Bitten by my C/Java experience Andrew Cooper <amc96@cam.ac.uk> - 2015-05-04 21:57 +0100
      Re: Bitten by my C/Java experience random832@fastmail.us - 2015-05-04 17:16 -0400
      Re: Bitten by my C/Java experience Tim Chase <python.list@tim.thechases.com> - 2015-05-04 16:26 -0500
  Re: Bitten by my C/Java experience Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-04 18:59 +0100
  Re: Bitten by my C/Java experience Ian Kelly <ian.g.kelly@gmail.com> - 2015-05-04 13:39 -0600
    Re: Bitten by my C/Java experience Cecil Westerhof <Cecil@decebal.nl> - 2015-05-04 22:28 +0200
      Re: Bitten by my C/Java experience Dave Angel <davea@davea.name> - 2015-05-04 19:17 -0400
  Re: Bitten by my C/Java experience Terry Reedy <tjreedy@udel.edu> - 2015-05-04 16:06 -0400
  Re: Bitten by my C/Java experience BartC <bc@freeuk.com> - 2015-05-04 23:02 +0100
    Re: Bitten by my C/Java experience Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-05 18:19 +1000
      Re: Bitten by my C/Java experience BartC <bc@freeuk.com> - 2015-05-05 14:20 +0100
        Re: Bitten by my C/Java experience Rustom Mody <rustompmody@gmail.com> - 2015-05-05 09:24 -0700
          Re: Bitten by my C/Java experience Antoon Pardon <antoon.pardon@rece.vub.ac.be> - 2015-05-06 14:38 +0200
            Re: Bitten by my C/Java experience Rustom Mody <rustompmody@gmail.com> - 2015-05-06 06:03 -0700
        Re: Bitten by my C/Java experience Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-05-06 23:19 +1200
          Re: Bitten by my C/Java experience BartC <bc@freeuk.com> - 2015-05-06 13:40 +0100
            Re: Bitten by my C/Java experience Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-05-07 02:03 +1000
              Re: Bitten by my C/Java experience Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-05-06 21:13 +0100
      Re: Bitten by my C/Java experience Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2015-05-06 23:15 +1200
    Re: Bitten by my C/Java experience random832@fastmail.us - 2015-05-06 09:11 -0400
    Re: Bitten by my C/Java experience Chris Angelico <rosuav@gmail.com> - 2015-05-06 23:16 +1000

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