From: Christoph <chr_mail@...>
Date: 2005-03-30T08:20:26+09:00
Subject: Re: Modifying boolean values

Farrel Lifson schrieb:

>Hi Rubyists,
>
>Is it possible to somehow ducktype an object so that it behaves like a
>boolean object (ie true or false)?
>
>The problem I'm having at the moment is that I'd like to have a
>modified boolean value so that instead of returning "true" or "false",
>my objects to_s returns "1" when true and "0" when false. I've tried
>the following
>
>@myTrue = true
>def @myTrue.to_s
>	return "1"
>end
>
>however creating an anonymous class doesn't seem to be allowed and
>this affected the results of the original true instance (it now
>returns "1" as well) which I'd prefer stayed untouched.
>
>I thought of using numbers such as 1 for true but 0 is not false in a
>boolean expression.
>
>So is there a way to create an object that acts like a true or false
>when in boolean expression but still be modified without changing the
>true or false global objects? Or is there any function called in the
>evaluation of boolean expresssions which would allow me to ducktype a
>modified object?
>
>Thanks in advance,
>Farrel
>
>
>  
>