From: Jason Lillywhite <jason.lillywhite@...>
Date: 2009-03-18T14:12:20+09:00
Subject: Re: local state variables unique to different objects

ah, thank you.

Interesting how in Lisp (Scheme) you have to do:

(begin (set! balance (- balance amount))
                 balance)

to decrement the balance and change it's state - using the set!
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