From: David Alan Black <dblack@...>
Date: 2001-11-30T23:13:09+09:00
Subject: [ruby-talk:27065] Re: Using Enumerable

On Fri, 30 Nov 2001, David Alan Black wrote:

> Hi --
>
> On Fri, 30 Nov 2001, Peter Hickman wrote:
>
> > Thanks to all who replied, like all ruby it was alot simpler than I
> > thought.
> >
> > class Fred
> >         include Enumerable
> >
> >         def initialize
> >                 @end = 10
> >                 @pointer = 0
> >         end
> >
> >         def each
> >                 while @pointer != @end do
> >                         @pointer += 1
> >                         yield @pointer
> >                 end
> >                 @pointer = 0
> >         end
> > end
>
> And if you want to be even more concise while still (in my opinion :-)
> being readable:
>
>         def each
>           yield @pointer += 1 until @pointer == @end
>           @pointer = 0
>         end
>
>

Or even:

        def each
          yield *@pointer + 1 .. @end
        end

One of the things I love about Ruby is how as you work on a problem,
the code sort of evaporates off the screen bit by bit :-)


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav