Re: Function declarations ?

Date	2011-06-13 17:19 -0700
From	John Nagle <nagle@animats.com>
Newsgroups	comp.lang.python
Subject	Re: Function declarations ?
References	<slrniuv00f.8s9.cheney@atc5.vermine.org> <e7913881-3028-4370-b4f5-7a7b17b04be0@h7g2000yqa.googlegroups.com> <slrniva5en.8s9.cheney@atc5.vermine.org>
Message-ID	<4df6a92e$0$2168$742ec2ed@news.sonic.net> (permalink)
Organization	Sonic.Net

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On 6/12/2011 12:38 PM, Andre Majorel wrote:
> On 2011-06-10, Asen Bozhilov<asen.bozhilov@gmail.com>  wrote:
>> Andre Majorel wrote:
>>
>>> Is there a way to keep the definitions of the high-level
>>> functions at the top of the source ? I don't see a way to
>>> declare a function in Python.
>>
>> Languages with variable and function declarations usually use
>> hoisted environment.
>
> Hoisted ? With a pulley and a cable ?

    There are languages with definitions and in which
the compiler looks ahead.  FORTRAN, for example.
Python doesn't work that way.  Nor do C and the
languages derived from it, because the syntax
is context-dependent.  (In C++, "A b;" is ambiguous
until after the declaration of A. In
Pascal-derived languages, you write "var b: A;",
which is parseable before you know what A is.
So declarations don't have to be in dependency order.)

    None of this is relevant to Python, but that's
what "hoisted" means in this context..

				John Nagle

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Thread

Function declarations ? Andre Majorel <cheney@halliburton.com> - 2011-06-08 13:58 +0000
  Re: Function declarations ? Calvin Spealman <ironfroggy@gmail.com> - 2011-06-08 10:06 -0400
  Re: Function declarations ? "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-06-08 10:27 -0400
  Re: Function declarations ? Asen Bozhilov <asen.bozhilov@gmail.com> - 2011-06-10 15:46 -0700
    Re: Function declarations ? Andre Majorel <cheney@halliburton.com> - 2011-06-12 19:38 +0000
      Re: Function declarations ? Tim Roberts <timr@probo.com> - 2011-06-12 21:27 -0700
        Re: Function declarations ? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-06-14 14:03 +1200
      Re: Function declarations ? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-06-13 14:58 +0000
        Re: Function declarations ? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-06-14 13:18 +1200
      Re: Function declarations ? John Nagle <nagle@animats.com> - 2011-06-13 17:19 -0700

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