From: William Djaja Tjokroaminata <billtj@...>
Date: 2002-09-29T00:28:03+09:00
Subject: Re: Where Is Method Call Precedence?

Hi,

If I remember correctly, tuples can be used as hash keys while an
ordinary array (or 'list' as Python calls it) cannot.  Python has the
concept of mutable and immutable objects.  Only immutable objects can be
used as hash (or 'dictionary' as Python calls it) keys.

I don't know why Python needs the concept of mutable and immutable objects
while Ruby does not.  I guess this is related to the fundamental object
model.  I think I understand the Ruby object model, but I never got a
chance to peek under the hood of Python.

Regards,

Bill
==============================================================================
Gavin Sinclair <gsinclair@soyabean.com.au> wrote:
> Since Ruby is close to Python is *some* ways, and Python has tuples, I cast the
> question: "What are tuples used for in Python?".  If someone answers that, then
> I would get an idea of why I might like them in Ruby.

> Cheers,
> Gavin