From: "Ara.T.Howard" <ahoward@...>
Date: 2004-02-20T20:21:17+09:00
Subject: Re: proposal: let kind_of take more arguments

On Thu, 19 Feb 2004, Simon Strandgaard wrote:

> Date: Thu, 19 Feb 2004 18:44:23 +0100
> From: Simon Strandgaard <neoneye@adslhome.dk>
> Newsgroups: comp.lang.ruby
> Subject: Re: proposal: let kind_of take more arguments
> 
> On Thu, 19 Feb 2004 09:30:16 -0700, Ara.T.Howard wrote:
> > On Thu, 19 Feb 2004, Simon Strandgaard wrote:
> >> From: Simon Strandgaard <neoneye@adslhome.dk>
> >> On Thu, 19 Feb 2004 08:19:33 -0700, Ara.T.Howard wrote:
> >> > 
> >> > what do you reccomend (when a case won't do) ?
> >> > 
> >> > ...
> >> >   unless choice.kind_of?(Zero) or choice.kind_of?(One)
> >> > ...
> >> > 
> >> 
> >> My brain is terrible at dealing with 'unless'.
> >> If its just "unless something" then its ok.
> >> But when its "unless a or b and c" then it chokes.
> >> 
> >> Am I the only one feeling like this?
> >> 
> >> Where can I seek help ?  ;-)
> > 
> > a digital logic book, the simplest, will help.  de morgan's laws..., eg.
> [snip talk about de morgans law]
> 
> Yes I know these rules.. also karnough maps helps gaining overview of
> boolean operations. When an expression gets too complex then I like 
> place a comment with the corresponding karnough map. 
> 
> What I should have said was that I grew up with 'if then else'.
> The 'unless' keyword is a recent addition to my vocabulary, I am still 
> a bit rusty in its usage.

ah.  i got it from a the 'p' language - one of the good things about it IMHO.
;-)

-a
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