Phil Tomson wrote:
> check out this article on artima by Topher Cyl:
> http://www.artima.com/rubycs/articles/patterns_sexp_dsls.html

Great article. Thanks. :-)

-- 
Dr Jon D Harrop, Flying Frog Consultancy
OCaml for Scientists
http://www.ffconsultancy.com/products/ocaml_for_scientists/index.html?usenet