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Paste # 96849
2017-02-23 12:13:18

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  1. #lang racket
  2. (define (my-map f lst)
  3.   (cond
  4.    [(empty? lst) empty]
  5.    [else (cons (f (first lst))
  6.                (my-map f (rest lst)))]))
  7.  
  8. (my-map sum(list (1 2 3)))

=>

sum: undefined;

 cannot reference an identifier before its definition

  in module: 'm