From: "trans.  (T. Onoma)" <transami@...>
Date: 2004-10-31T07:39:52+09:00
Subject: Re: New Ruby conditional semantics thoughts

Nice work. Your explanation is a bit terse, but I'll take it :) I forwarded 
this on to suby-ruby. Hope that's okay by you.

Thanks,
T.

On Saturday 30 October 2004 05:58 pm, Brian Mitchell wrote:
|     The basic background was begun by someone asking a question about
| boolean expressions and _why_ Ruby treats expression results nil and
| false as a *false* path in a boolean conditional. Some just explained
| that nil is like empty so it is nice to treat is like false.
|     Someone then pointed out how one could use the methods false? and
| true? on the object to test its value. This immediately reminded me of
| smalltalk conditional design and possible ways one could implement
| something similar in Ruby. For example, here are smalltalk
| conditionals implemented in Ruby:
|
| module Kernel
|   def _if(exp, &block)
|     else_block = callcc { |cont|
|       @condition = cont
|
|  [snip]