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  1. Newsgroups: comp.lang.lisp
  2. Path: sparky!uunet!pmafire!mica.inel.gov!ux1!news.byu.edu!gatech!darwin.sura.net!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!mp.cs.niu.edu!uxa.ecn.bgu.edu!news.ils.nwu.edu!anaxagoras!krulwich
  3. From: krulwich@zowie.ils.nwu.edu (Bruce Krulwich)
  4. Subject: Re: Lucid bug in delete-if?
  5. In-Reply-To: konstan@saturn.cs.umn.edu's message of Sat, 14 Nov 1992 20:56:20 GMT
  6. Message-ID: <KRULWICH.92Nov16104949@zowie.ils.nwu.edu>
  7. Sender: usenet@ils.nwu.edu (Mr. usenet)
  8. Nntp-Posting-Host: zowie.ils.nwu.edu
  9. Organization: The Institute for the Learning Sciences, Evanston, IL
  10. References: <1992Nov14.180229.7728@cs.cornell.edu>
  11.     <1992Nov14.205620.11328@news2.cis.umn.edu>
  12. Date: Mon, 16 Nov 1992 16:49:49 GMT
  13. Lines: 11
  14.  
  15.  
  16. Have any implementations ever tried to handle destructive modification of the
  17. first element of a list by RPLACA'ing the first cons cell to the first element
  18. of the desired list?
  19.  
  20. (Not that this would completely obviate the need to SETF the result of a
  21. destructive operation, but I was just curious.)
  22.  
  23. Bruce
  24.  
  25.  
  26.