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Paste # 24141
2014-11-26 18:11:06

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  1. #lang racket
  2.  
  3. (define (m! ls new)
  4.   (set! ls new))
  5.  
  6. (define ls '(1 2 3))
  7.  
  8. (m! ls '(a b c))
  9.  
  10. ls

=>

'(1 2 3)