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A comment on Show HN: New Lisp data structure. Parent comment

Re:Show HN: New Lisp data structure by alec on Wednesday December 01, 2010 @08:28PM (#1960583)
Use gensym to make a unique sentinel.
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Re:Show HN: New Lisp data structure by Shamiq on Thursday December 02, 2010 @01:45AM (#1961314)
To clarify, you mean: (setf nol (gensym)) instead of (setf nol 'nol)?
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