From: Robert Klemme <shortcutter@...>
Date: 2011-01-21T18:17:42+09:00
Subject: Re: Deleting from hashes

On Fri, Jan 21, 2011 at 1:56 AM, Josh Rowe <joshua@wired.com.au> wrote:

> Following on from my previous question
> http://www.rubyforum.com/topic/912567#new
> I need some help with deleting cards from a hash. Heres what I have
>
> #!/usr/bin/env ruby
> Card = Struct.new :name, :type, :atk, :defn, :level
> $deck = [
>  Card["Celtic Guardian", :monster, 1400, 1200,4],
>  Card["Dark Magician", :monster, 2500, 2100,7],
> ]
>
> def draw
>  draw = rand(1)

rand(1) won't work as intended, since you never get 1 as result.  You
would need at least rand(2) but even better use

draw = rand($deck.size)

otherwise the drawing won't work reliably once $deck has changed.

Kind regards

robert


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