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LetS -- a new looping macro for lisp

LetS is a new Lisp looping macro which makes it possible to
write a wide class of loops as simple expressions.  For example,
in order to sum up the positive elements of the one
dimensional array A one need only wirte:

(Rsum (Fgreater (Evector A)))

LetS is described fully in AIM-680 which has just appeared.
I will give a talk describing LetS in a few weeks.

LetS is compatably with both MacLisp and LispMachine Lisp.
It exists on the directories LIBSLP and LMLIB.

Try it you will like it.

				Dick Waters

Send all comments etc. to Dick@OZ.