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Re: closure = decorator?

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Chris Angelico writes:

> def outer(x):
>     x += 1
>     def inner():
>         return x
>     return inner
...
> The terminology is that inner() "closes over" x, if I have that
> correct (I've not been all that big in functional programming and
> lambda calculus). Someone will correct me if I'm not.

I don't actually know for sure what the most correct terminology is,
but I like to think that a closure is a procedure (function) closed in
the environment (namespace) where it was created, so even when it is
called from another environment, it uses the one where it was born.

But that may be private to me.

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closure = decorator? Tim <jtim.arnold@gmail.com> - 2013-10-10 06:51 -0700
  Re: closure = decorator? Chris Angelico <rosuav@gmail.com> - 2013-10-11 01:03 +1100
    Re: closure = decorator? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-10-10 17:15 +0300
      Re: closure = decorator? Piet van Oostrum <piet@vanoostrum.org> - 2013-10-10 12:31 -0400
        Re: closure = decorator? Roy Smith <roy@panix.com> - 2013-10-10 20:04 -0400
          Re: closure = decorator? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-10-11 10:14 +0300
            Re: closure = decorator? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 09:24 +0000
              Re: closure = decorator? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-10-11 15:01 +0300
                Re: closure = decorator? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-10-11 16:44 +0000
                Re: closure = decorator? Terry Reedy <tjreedy@udel.edu> - 2013-10-11 16:51 -0400
              Re: closure = decorator? Franck Ditter <nobody@nowhere.org> - 2013-10-11 14:08 +0200
                Re: closure = decorator? Terry Reedy <tjreedy@udel.edu> - 2013-10-11 16:55 -0400
  Re: closure = decorator? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-10-10 17:08 +0300
  Re: closure = decorator? Peter Cacioppi <peter.cacioppi@gmail.com> - 2013-10-12 13:54 -0700
    Re: closure = decorator? Tim <jtim.arnold@gmail.com> - 2013-10-14 09:39 -0700

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