From: Robert Klemme <bob.news@...>
Date: 2003-12-01T22:37:07+09:00
Subject: Re: New to ruby--trouble with initializing arrays


"Robert Klemme" <bob.news@gmx.net> schrieb im Newsbeitrag
news:bqet0g$21995e$1@ID-52924.news.uni-berlin.de...
>
> "Van Jacques" <vanjac12@yahoo.com> schrieb im Newsbeitrag
> news:70ae81fd.0311281947.909cec1@posting.google.com...
> > I am writing a practice program; the Game of Life. Naturally I am
having
> troubles.
> >
> > This will probably be elementary those with experience in programming
> with ruby,
> > so please tell me the right place to post such questions if this is
not
> the place.
> >
> > The program is not running as I think it should.
> >
> > I think it may be due to the way I set up the arrays, so that many
> elements refer to
> > the same element, and then later in the program when they should be
> different
> > they remain the same.
>
> Does this help:

Slightly improved to tackle the borders.

class Board
  def initialize(size=8)
    @size = 8
    @values = Array.new( size * size, 0 )
  end

  def [](x,y)
    @values[pos(x,y)]=v
  end

  def []=(x,y,v)
    @values[pos(x,y)]=v
  end

  protected
  def pos(x,y)
    ( x % @size ) * @size + ( y % @size )
  end
end

> board = Board.new
> tmp = board.dup
> # manipulate tmp
> board = tmp

    robert