From: Wyatt Greene <greenewm@...>
Date: 2008-01-28T14:20:02+09:00
Subject: Re: Module Global Hash

On Jan 28, 12:06 am, Ryan Lewis <c00lry...@gmail.com> wrote:
> #!/usr/bin/env ruby
> module Users
>   class User < Struct.new(:screenname, :password, :dob, :join_date,
> :age)
>     def initialize(sn, pw, dob)
>       self.screenname = sn
>       self.password   = pw
>       self.dob        = Time.parse(dob)
>       self.join_date  = Time.now
>       self.age        = Time.now.year - Time.parse(dob).year
>     end
>   end
>   #########################################
>   user_hash = {}
>
>   def new(sn, pw, dob)
>     Users::user_hash[sn] = User.new(sn, pw, dob)
>   end
>   #########################################
>   module_function :new
> end
>
> I'm trying to make it so when I call:
>    Users::new("screenname", "pass", "1/15/91")
>
> it adds a new instance of the User class into user_hash, but when I
> execute the above code in IRB I get a NoMethodError for user_hash for
> the Users:module
>
> I've also tried putting both a @ and @@ infront of user_hash but irb
> comes up with the same error.
> --
> Posted viahttp://www.ruby-forum.com/.

Remember that in Ruby, everything is an object and objects communicate
by passing messages (calling methods).  So you can't get to variables
of an object (such as user_hash).  You can only call methods that an
object responds to.