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Groups > comp.lang.python > #86257

Re: list storing variables

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On Mon, Feb 23, 2015 at 12:06 PM, Marko Rauhamaa <marko@pacujo.net> wrote:
> But there is! I just demonstrated it in a previous posting:
>
>> In Python, you can accomplish "&" by creating an object:
>>
>>    >>> a = 3
>>    >>> b = 4
>>    >>> class AmpersandA:
>>    ...     def get(self): return a
>>    ...     def set(self, value): global a; a = value
>>    ...
>>    >>> class AmpersandB:
>>    ...     def get(self): return b
>>    ...     def set(self, value): global b; b = value
>>    ...
>>    >>> l = [ AmpersandA(), AmpersandB() ]
>>    >>> for m in l:
>>    ...     m.set(7)
>>    ...
>>    >>> print(a)
>>    7
>>    >>> print(b)
>>    7
>>    >>>
>>
>> It's exactly like "&" in C escept it's a slight bit more verbose and the
>> exact implementation is dependent on the name of the variable.

"Sure, you can have list comprehensions in C! Just write a function
whose arguments are two other functions and an input array."

Obviously one can use any Turing-complete language to emulate features
of any other Turing-complete language, but I think the point is that
there is no syntactic support for it.

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list storing variables "ast" <nomail@invalid.com> - 2015-02-23 13:55 +0100
  Re: list storing variables Dave Angel <davea@davea.name> - 2015-02-23 08:24 -0500
  Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 15:49 +0200
  Re: list storing variables Peter Pearson <pkpearson@nowhere.invalid> - 2015-02-23 17:35 +0000
    Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 20:22 +0200
      Re: list storing variables Peter Otten <__peter__@web.de> - 2015-02-23 19:41 +0100
        Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 21:06 +0200
          Re: list storing variables Chris Angelico <rosuav@gmail.com> - 2015-02-24 06:17 +1100
            Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 22:25 +0200
          Re: list storing variables Ian Kelly <ian.g.kelly@gmail.com> - 2015-02-23 12:29 -0700
            Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-23 22:38 +0200
  Re: list storing variables Ben Finney <ben+python@benfinney.id.au> - 2015-02-24 09:03 +1100
    Re: list storing variables Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-02-24 13:24 +1100
      Re: list storing variables Marko Rauhamaa <marko@pacujo.net> - 2015-02-24 10:18 +0200

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