[Q] Accept circular lists where that is useful in #'mapcar*, #'map* and friends.
Stephen J. Turnbull
stephen at xemacs.org
Fri Sep 17 02:47:36 EDT 2010
Is this standard CL?
N.B. It has potentially severe performance implications, it seems to
me, since every list must be checked for length/circularity before
iterating, whereas in the current implementation this can be checked
as we go, and simply throw the error when discovered.
Aidan Kehoe writes:
> changeset: 5273:799742b751c8 tag: tip user: Aidan Kehoe
> <kehoea at parhasard.net> date: Thu Sep 16 20:34:49 2010 +0100 files:
> lisp/cl-extra.el src/ChangeLog src/fns.c description: Accept
> circular lists where that is useful in #'mapcar*, #'map* and
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