Alex Shinn scripsit: > Some historic Lisps had no limit, but this is not practical in a > Scheme standard so RnRS arbitrarily chose N=4.
Well, for historical reasons. PDP-6 Lisp (1966), which is the common ancestor of Interlisp, Common Lisp, and Scheme, had the N<=4 procedures. See page 4 of AIM-098. That's the earliest I can trace them back: Basic PDP-1 Lisp (1964) was still N=1, like the original Lisp 1.5. The unlimited-N systems (including mine) were branches off this main stem. -- A few times, I did some exuberant stomping about, John Cowan like a hippo auditioning for Riverdance, though [email protected] I stopped when I thought I heard something at http://ccil.org/~cowan the far side of the room falling over in rhythm with my feet. --Joseph Zitt _______________________________________________ Scheme-reports mailing list [email protected] http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports
