From: Ryan Lewis <c00lryguy@...>
Date: 2008-04-11T08:00:15+09:00
Subject: Stack Level Too Deep?

I have a User class that handles users as structs and adds them to a
hash within the class. Anyways, I was making a Remove functions for it.
Here's my code:

[code]
  class User < Struct.new(:username, :password)
    class <<self
      def list_hash
        @@list_hash ||= {}
      end
      def list
        list_hash.keys.sort
      end
      def [](user)
        list_hash[user]
      end
      def []=(user, struct)
        list_hash[user] = struct
      end

      def remove(user)
        list_hash.delete(user) ### Works perfectly fine
      end
    end

    def initialize(username, password)
      self.username  = username
      self.password  = password
      self.class[username] = self ### Same as User[username] = self
    end

    def remove()
      self.remove() ### => Stack Level Too Deep.
    end
  end
[/code]

Alright throw this code at the bottom to test the remove functions...
[code]
  User.new "Alpha", "Aye"
  User.new "Beta", "Bee"
  User.new "Charlie", "Sea"

  puts User.list, "" ### => ["Alpha", "Beta", "Charlie"]
  User.remove("Beta") ### Beta removed..
  puts User.list ### => ["Alpha", "Charlie"]
  User["Alpha"].remove ### Stack level too deep >_<
  puts "Alpha removed..?"
[/code]

Now why does it come up with a SystemStackError: stack level too deep on
User["Alpha"].remove?

This problem has kept me up all night O_O

Attachments:
http://www.ruby-forum.com/attachment/1718/user.rb

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