From: pluskid <pluskid@...>
Date: 2007-12-13T23:35:06+09:00
Subject: Is there any way to redefine the `new' method?

Hi! I'm writing a toy interpreter for scheme in Ruby. I created a
class to represent scheme Symbol.
And as the scheme Symbol, I want only one instance for symbols with
the same name. I try to
do it like this:

class Symbol
  alias orig_new new
  def new(name)
    @@symbols[name] ||= orig_new(name)
    @@symbols[name]
  end
end

But I failed. It says `new' is undefined. Is there any way to do the
tricky? Thanks!