COWSEL

Domain	Definition
Computing	COWSEL COntrolled Working SpacE Language. Burstall and Popplestone, U Edinburgh, 1964-66. LISP-like semantics with FORTH-like stack, and reverse Polish syntax. Forerunner of POP. EPU-R-12, U Edinburgh (Apr 1966). Source: The Free On-line Dictionary of Computing.
Source: compiled by the editor from various references; see credits.

Specialty Definition: COWSEL programming language

COWSEL is the COntrolled Working SpacE Language. Between 1964 and 1966, it was designed and implemented by Robin Popplestone, initially on a Ferranti Pegasus computer at the University of Leeds and on a Stantec Zebra at the Bradford Institute of Technology; later with Rod Burstall on an Elliot 4120 at the University of Edinburgh. It was based on a reverse Polish form of Lisp combined with some ideas from CPL. In the summer of 1966 it was renamed POP-1 and development continued under that name.

Example Code

function member
lambda x y
comment Is x a member of list y;
define      y atom then *0 end
            y hd x equal then *1 end
            y tl -> y repeat up

Reference

Technical report: EPU-R-12, U Edinburgh (Apr 1966).

External link

http://www-robotics.cs.umass.edu/~pop/pop_development.html --The Early Development of POP

Anagrams: COWSEL

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "c-e-l-o-s-w"
	-1 letter: clews, close, coles, cowls, lowes, lowse, scowl, socle.
	-2 letters: cels, clew, cole, cols, cowl, cows, lose, lowe, lows, oles, owes, owls, owse, scow, slew, sloe, slow, sole, woes.
	-3 letters: cel, col, cos, cow, els, low, oes, ole, ose, owe, owl, sec, sel, sew, sol, sow, woe, wos.
	-4 letters: el, es, lo, oe, os, ow.
	Words containing the letters "c-e-l-o-s-w"
	+1 letter: scowled, scowler.
	+2 letters: beclowns, clowders, coleslaw, cowbells, scowlers, wedlocks, welcomes.
	+3 letters: callowest, clockwise, closedown, cogwheels, coleslaws, coleworts, crownless, downscale, lacewoods, laceworks, locoweeds, lowercase, showplace, welcomers.
	+4 letters: allowances, belowdecks, callowness, closedowns, clowneries, cowlstaves, downscaled, downscales, lancewoods, lowercased, lowercases, pillowcase, showplaces, workplaces, wyliecoats.
	+5 letters: blowtorches, candlewoods, commonweals, coneflowers, cornflowers, crewelworks, lowercasing, pillowcases, watercolors, welcomeness.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.