From: mental@...
Date: 2005-11-17T23:49:42+09:00
Subject: Re: Object#to_b

Quoting Jeremy Kemper <jeremy@bitsweat.net>:

> I would not like new false values, but I would like to be able to
> proxy the existing false values.  Especially nil.

Ah, fudge.  I hadn't thought of that.  That is one place where
lazy.rb falls down.

promise { false } will always be true :/

(unless you use an explicitly force()'d value.)

> What is the cost [of allowing NilClass and FalseClass subclasses]?

I don't see any way that it could be as efficient as the current
setup, where nil and false are immediate values and are checked
with a simple bitmask.

-mental