From: Sylvain Joyeux <sylvain.joyeux@...>
Date: 2005-07-07T01:13:08+09:00
Subject: Re: Inheriting Array and slice() behaviour

> What return type do you want? Arrays or Expressions? You can force
> return values back to Arrays with #to_a, or manually make Expressions
> with something like
>
>   y = Expression.new(x.slice(1..5).to_a)

I find it VERY weird to build anything else than an Array here. Array now 
nothing about Expression, so I don't see how - in general - it could build 
a well-formed Expression object

Sylvain