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Paste # 21920
2017-09-14 04:35:17

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  1. #lang racket
  2.  
  3. (DEFINE (quadrat a b c d)
  4.        (
  5.          cons (cons a (cons b `()))
  6.               (cons (cons c (cons d `()))
  7.                     `()
  8.               )
  9.        )
  10. )

=>

DEFINE: undefined;

 cannot reference an identifier before its definition

  in module: 'm