From: ara.t.howard@...
Date: 2007-01-22T10:31:10+09:00
Subject: Re: Tricky: converting path into a Hash

On Mon, 22 Jan 2007, Robert MannI wrote:

> Hello!
>
>
> I am wondering if the mighty ruby crowd has a brilliant idea for a tricky
> problem I am solving.
>
> I need to store a path as a tree in a hash.
>
> Given:
> a/b/c
>
> I want the Hash:
> { 'a' => { 'b' => { 'c' => { } } } }
> or written differently
> hsh['a']['b']['c'] = {}
>
> Is there an elegant solution to this, without maybe looping or eval'ing too
> much?
>

harp:~ > cat a.rb
require 'pathname'

class Pathname
   def to_hash
     ret = h = {}
     each_filename{|part| h[part] = (h={})}
     ret
   end
end

pn = Pathname.new 'a/b/c'

p pn.to_hash


harp:~ > ruby a.rb
{"a"=>{"b"=>{"c"=>{}}}}


-a
-- 
we can deny everything, except that we have the possibility of being better.
simply reflect on that.
- the dalai lama