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COWSEL (''COntrolled Working SpacE Language'') is a programming language designed between 1964 and 1966 by Robin Popplestone. It was based on an RPN form of Lisp combined with some ideas from CPL. COWSEL was initially implemented on a Ferranti Pegasus computer at the University of Leeds and on a Stantec Zebra at the Bradford Institute of Technology; later, Rod Burstall implemented it on an Elliot 4120 at the University of Edinburgh. COWSEL was renamed POP-1 during the summer of 1966 and development continued under that name from then on. ==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 Note that keywords were also underlined in the original printouts. Popplestone used a Flexowriter with underscoring for syntax highlighting. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「COWSEL」の詳細全文を読む スポンサード リンク
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