From: Tim Hunter <TimHunter@...>
Date: 2007-11-17T23:10:38+09:00
Subject: Re: Observe variable set and variable change

saladin.mundi@gmx.de wrote:
> Hey folks,
> 
> is there any kind of Ruby / C function with which it is possible to see when a variable is set or changed?
> 
> Something like:
> 
> class x
> 
>   def y()
>     z = 42
>     z = 100
>   end
> end
> 
> So that a function takes care about setting the 42 and another for caring about changing the value of z to 100?
> 
> thanks in advance
> 
> sala
> 

Let's try again...

There's Observable:

~$ ri Observable
------------------------------------------------------ Class: Observable
      Implements the Observable design pattern as a mixin so that other
      objects can be notified of changes in state. See observer.rb for
      details and an example.

------------------------------------------------------------------------

Instance methods:
      add_observer, changed, changed?, count_observers, delete_observer,
      delete_observers, notify_observers
~$


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