From: mrp@...
Date: 2002-03-13T23:19:58+09:00
Subject: how do i: add_observer( { small bit of code } )

observing an object, i want to run a small bit of code when update is
called.  i currently have a small class Wrapper, and set things up like:

  x.add_observer( Wrapper.new() { my code }) 

where the block parameter is stored in the class instance, and called in 
Wrapper.update().

is this the rubyest way of doing this?

thanks,
martin.