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Paste # 31767
2019-03-15 13:48:44

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  1. #lang racket
  2.  
  3. (define l (list '(a b c) '(d e f) '(h i j)))
  4.  
  5. (printf l)

=>

printf: contract violation

  expected: string?

  given: '((a b c) (d e f) (h i j))