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Re: why tail recursion matters and why Java isn't it, was Re: lispperformance was Re: problems with lisp
Guy Steele - Sun Microsystems Labs wrote:
> Date: Thu, 04 Sep 2003 10:48:00 +0200
> From: Pascal Costanza <email@example.com>
> To: firstname.lastname@example.org
> You seem to suggest that recursion is always the most "natural" solution
> but that's just not true. In many cases, an iteration expresses much
> more clearly the intention of a programmer. Here are three Common Lisp
> versions of an example of a collector I repeatedly need in a current
> Of course, if you "repeatedly need" it, then defining a function
> is exactly what you should be doing.
Of course. However, in the project I have mentioned I can't use higher
order functions or other abstractions that would allow me to do this.
(Or I simply don't know how to do it yet.)
> Or use (mapcar #'car list).
...this is also why I haven't thought of this one - because
unfortunately, I have to be in a mode that makes me not think about it. :}
(I am trying to prove something with ACL2. I really miss LOOP and
Pascal Costanza University of Bonn
mailto:email@example.com Institute of Computer Science III
http://www.pascalcostanza.de Römerstr. 164, D-53117 Bonn (Germany)