Re: Interesting: "Lisp as a competitive advantage"

Tim Sauerwein wrote:

I once wrote a macro to help express pattern-matching rules. In these rules, variables that began with a question mark were treated specially.

David Gifford's Programming Languages class at MIT uses Scheme+, a variant of MIT Scheme with datatypes and pattern matching. These extensions are implemented as macros. (http://tesla.lcs.mit.edu/6821) But of course Haskell has those already :) -- Mieszko