From: Shashank Date <ADATE@...>
Date: 2002-06-09T23:18:19+09:00
Subject: Re: Unflatten

Excellent suggestions, Joel, I have added them my perosnal "goodies"
library.
And you are right, they do address  a different but similar problem.

I am studying your solution and being a newbie it is taking me a while for
it to sink in ;-), but I am getting there.
Thanks again.


"Joel VanderWerf" <vjoel@PATH.Berkeley.EDU> wrote in message
news:3D013DB0.5811BD55@path.berkeley.edu...
> Joel VanderWerf wrote:
> > module Enumerable
> >   def nest(&compare)
> ..
>
> FWIW, I just realized that a grouping can be done very easily using
> #nest:
>
> module Enumerable
>   def group(&test)
>     nest { |x| test[x] ? 1 : 0 }
>   end
> end
>
> p [1, 2, "three", "four", 5, "six"].group { |x| x.is_a? String }
>
>   ==> [1, 2, ["three", "four"], 5, ["six"]]
>