[gambit-list] 90-min-scc.scm question

naruto canada narutocanada at gmail.com
Thu Aug 30 12:46:53 EDT 2007


hi

I've just finished reading the pdf file "The 90 Minute Scheme to C compiler".
I look at the source code, and got stopped by the first line of code:
(define-type ast
  extender: define-type-of-ast
  subx) ; the asts of the sub-expressions

What is define-type?



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