Programming with Sets: An Introduction to SETL

The programming language SETL is a relatively new member of the so-called "very-high-level" class of languages, some of whose other well-known mem­ bers are LISP, APL, SNOBOL, and PROLOG. These languages all aim to reduce the cost of programming, recognized today as a main obstacle to future progress in the computer field, by allowing direct manipulation of large composite objects, considerably more complex than the integers, strings, etc., available in such well-known mainstream languages as PA…