Subject: Re: how to validate input?
From: Erik Naggum <>
Date: 2000/04/26
Newsgroups: comp.lang.lisp
Message-ID: <>

* (Kragen Sitaker)
| In the tail-call optimization case, I can't imagine why you'd want to
| give the user the option to turn off tail-call optimization if it were
| only a win for your particular implementation.

  consider full and accurate backtraces during debugging, profiling
  that reports correct call trees, and simply correct error messages.

  programmers prefer to be able to control optimization levels for a
  number of reasons.  Scheme doesn't have a standard way to express
  such preferences, either.  in other words, Scheme is not an option.
  (sorry, I had to.)