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Paste # 10415
2020-06-08 16:06:08

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  1. #lang racket
  2.  
  3. (define no #f)
  4.  
  5. (define (just a) a)
  6.  
  7. (displayln ((not) (just no)))

=>

not: arity mismatch;

 the expected number of arguments does not match the given

number

  expected: 1

  given: 0