From: Gavin Sinclair <gsinclair@...>
Date: 2003-07-19T15:47:38+09:00
Subject: Re: chaining comparisons

On Saturday, July 19, 2003, 3:58:51 PM, Kurt wrote:

> When I learned python I was overjoyed that I could evaluate 1 < 2 < 3
> and get "true".  I just realized that you can't do that in Ruby.  Is
> there a reason why?  Is it good?  I know I can use "between", but
> still...

I agree it would be cool, but it's pretty clear why Ruby doens't
support it:

            2 < 3              == true
            1 < true           == error
 therefore  1 < 2 < 3          == error

Ruby is a very expression-oriented language, and derives its strength
from conceptual purity.  If an expression evaluated to X in some
circumstances and Y in others, a small part of Ruby would be lost.

Gavin