From: walter a kehowski <wkehowski@...>
Date: 2005-08-09T16:01:09+09:00
Subject: Re: cartesian product


"Gene Tani" <gene.tani@gmail.com> wrote in message 
news:1123474109.033229.303310@o13g2000cwo.googlegroups.com...
> can we merge 2 threads
>
> http://groups-beta.google.com/group/comp.lang.ruby/browse_frm/thread/baeb5e192b809bf3/608d3656142aeba6?lnk=st&q=lucky+stiff+group:comp.lang.ruby&rnum=6&hl=en#608d3656142aeba6
>

Here's the nugget embedded in the thread:

   a=[1,2,3]
   b=[4,5,6]

   class Array

     def cartprod(b)

        self.inject(a=[]){|a,x| b.inject(a){|a,y| a << [x,y]}}

     end

   end

   p a.cartprod(b)

Very nice! This is why we like Ruby! [IMHO]

Walter Kehowski