[racket] finally via macro

Racket/Scheme language designers sometimes ask navel-gazing questions 
like "What does it really mean to return a value?" -- asked 
intelligently, not under the influence of psychoactives -- and this kind 
of thinking soon leads to greater insight and to more powerful 
programming language features.

You can certainly use "dynamic-wind" to approximate what Java people 
think of as "finally", and that's what I usually do on a day-to-day 
basis.  But when we have the luxury of getting even smarter over 
lunchtime, we can do things like read Dorai Sitaram's survey: 
http://repository.readscheme.org/ftp/papers/sw2003/Unwind.pdf

-- 
http://www.neilvandyke.org/