From: Jan Svitok <jan.svitok@...>
Date: 2007-03-01T22:16:36+09:00
Subject: Re: Newbie Question

On 3/1/07, Dick <rwk@americom.com> wrote:
> Hi,
>
> I am new to Ruby.  This is the very first class I am writing and it
> doesn't seem that Ruby is designed to handle what I thought should work.
> Why doesn't the below work?
>
> class Song < ActiveRecord::Base
>   @@dcounts = []
>
>   def Song.count(difficulty, artistid)
>     @@dcounts[difficulty][artistid]
>   end
>
>   def Song.count=(difficulty, artistid, val)
>     @@dcounts[difficulty] ||= {}
>     @@dcounts[difficulty][artistid] = val
>   end
> end
>
> Song.count(1, 3547) = 10
>
> test.rb:14: parse error, unexpected '=', expecting $
> Song.count(1,3547) = 10

You can't have more then one argument to setter (var=)

change it to

  def Song.set_count(difficulty, artistid, val)
     @@dcounts[difficulty] ||= {}
     @@dcounts[difficulty][artistid] = val
  end

  Song.set_count(1, 3547,10)

Then, maybe you can create classes for each of the subhashes to
encapsulate the functionality - but it depends on the purpose and the
data.

It's possible to write the code that you could write:

Song.difficulty(1).artist(3547) = 10