From: "Peña, Botp" <botp@...>
Date: 2007-10-23T14:11:25+09:00
Subject: Re: recursive array

From: Simon Schuster [mailto:significants@gmail.com] 
# 207:0> a = [1,2,3,4]
# [1, 2, 3, 4]
# 208:0> a[4] = a
# [1, 2, 3, 4, [...]]
# 209:0> a[4]
# [1, 2, 3, 4, [...]]
# 210:0> a[4][4]
# [1, 2, 3, 4, [...]]
# 211:0> a[4][4][4][4][4][3]
# 4
# 
# have you ever used this technique? can you
# provide some example code for us which illustrates 
# any kind of usefulness of this that you can
# imagine?

i am not yet in graphs/game theory but recursion things are good for research in those fields :)

this is just one stupid example,

> def sumb(a,i)
>   return 0 if a[i]==a
>   a[i]+sumb(a,i+1)
> end
=> nil
irb(main):042:0> a
=> [1, 2, 3, 4, [...]]
irb(main):043:0> sumb(a,0)
=> 10

i'm just playing w ruby :)

kind regards -botp