I don't deny that all of the things you mentioned are wonderful indeed. I just wonder if they really could only be done in lisp or even most conveniently. Many years ago I read a paper by Phil Wadler about logic programing using a functional language. I think it was called something like "How to replace failure with a list of successes." (Great title!) It blew my mind and made me doubt very much that the metaprogramming aspect of lisp had anything over clever functional programming.
Oh -- speaking of control structures -- once you start passing around continuations you can do anything. Lisp has no advantage there.
On Sep 20, 2005, at 5:45 PM, Bill Wood wrote:
All of these made non-trivial extensions to Lisp, and all were of arguably great utility.
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