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Re: How to pass class instance to a method?

References <3193e3dd-0507-4ff7-9026-ee80e5d9c1dd@googlegroups.com> <pan.2012.11.26.16.56.29.389000@nowhere.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date 2012-11-26 13:51 -0700
Subject Re: How to pass class instance to a method?
Newsgroups comp.lang.python
Message-ID <mailman.297.1353963109.29569.python-list@python.org> (permalink)

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On Mon, Nov 26, 2012 at 9:56 AM, Nobody <nobody@nowhere.com> wrote:
> In a dynamically-typed language such as Python, the set of acceptable
> types for an argument is determined by the operations which the function
> performs on it. This is in direct contrast to a statically-typed language,
> where the set of acceptable operations on an argument is determined by the
> type of the argument.

Not how I would put it.  In a statically typed language, types are
checked at compile-time (which does not necessarily imply that useful
type information can be made available to an IDE), whereas in a
dynamically typed language, some or all type checking is deferred to
run-time.

The description that "the set of acceptable types for an argument is
determined by the operations which the function performs on it" sounds
to me more like type inference, as exemplified by Haskell, which is
nonetheless a statically typed language.

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Thread

How to pass class instance to a method? ALeX inSide <alex.b.inside@gmail.com> - 2012-11-25 04:11 -0800
  Re: How to pass class instance to a method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-11-25 12:37 +0000
  Re: How to pass class instance to a method? Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2012-11-26 11:22 +1300
  Re: How to pass class instance to a method? Alain Ketterlin <alain@dpt-info.u-strasbg.fr> - 2012-11-26 11:08 +0100
  Re: How to pass class instance to a method? Nobody <nobody@nowhere.com> - 2012-11-26 16:56 +0000
    Re: How to pass class instance to a method? Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-26 13:51 -0700
    Re: How to pass class instance to a method? Dave Angel <d@davea.name> - 2012-11-26 16:58 -0500
      Re: How to pass class instance to a method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-11-26 22:18 +0000
        Re: How to pass class instance to a method? Dave Angel <d@davea.name> - 2012-11-26 22:14 -0500
          Re: How to pass class instance to a method? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-11-27 04:10 +0000
            Re: How to pass class instance to a method? Roy Smith <roy@panix.com> - 2012-11-26 23:25 -0500
            Re: How to pass class instance to a method? Dave Angel <d@davea.name> - 2012-11-27 00:18 -0500
    Re: How to pass class instance to a method? Ian Kelly <ian.g.kelly@gmail.com> - 2012-11-26 16:07 -0700
      Re: How to pass class instance to a method? Hans Mulder <hansmu@xs4all.nl> - 2012-11-27 01:36 +0100
    Re: How to pass class instance to a method? Dave Angel <d@davea.name> - 2012-11-26 21:50 -0500
  Re: How to pass class instance to a method? Drew <r.drew.davis@gmail.com> - 2012-11-26 17:14 -0800

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