From: Robert Klemme <bob.news@...>
Date: 2004-02-20T20:23:22+09:00
Subject: Re: proposal: let kind_of take more arguments


"Simon Strandgaard" <neoneye@adslhome.dk> schrieb im Newsbeitrag
news:pan.2004.02.19.17.44.22.899443@adslhome.dk...
> 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.

.... unless you use it more and more: this will accustom you to the u-word.

:-))

    robert