From: matz@... (Yukihiro Matsumoto)
Date: 2003-02-02T00:54:52+09:00
Subject: Re: Coercion of variables

Hi,

In message "Coercion of variables"
    on 03/02/02, Brian Candler <B.Candler@pobox.com> writes:

|However, suppose I have an existing class hierarchy: Bar is a subclass of
|Foo. I want to convert obj from an instance of Foo into an instance of the
|subclass Bar.
|
|Is that possible, without creating a whole new Bar object?

In general, No.

|(Practical example: I have defined a subclass of the TCPSocket object.
|TCPServer#accept returns an object of class TCPSocket. I want to convert
|this object into my own subclass)

How about extending the socket with your module.  See Object#extend.

  s = ss.accept
  s.extend YourSocketExtensionModule
  ...

							matz.