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The Scheme Programming Language The Scheme Programming Language
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Posted By

ikfjwe on 10/14/08


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cons

Published in: Scheme 

cons is not destructive.

Embed | Plain TextExpand 
  1. (setq alist '(a b c))
  2. ;(a b c)
  3. (cons '1 alist)
  4. ;(1 a b c)
  5. (prin1 alist)
  6. ;(a b c)
  7.  
  8. (setq alist (cons '1 alist))
  9. (prin1 alist)
  10. ;(1 a b c)

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