From: Marc Heiler <shevegen@...>
Date: 2007-11-18T00:53:56+09:00
Subject: Re: Observe variable set and variable change

> is there any kind of Ruby / C function with which it is possible to see 
> when a variable is set or changed?

You can try trace_var (or whatever the name was)

trace_var :$x, proc{print "$x is now ", $x, "\n"}
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