NPL (programming language): Difference between revisions

Revision as of 12:18, 10 November 2005

Revision as of 11:15, 25 March 2006

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{{cleanup-date|November 2005}}

:''At least three unrelated programming languages have had the name '''NPL'''.''

'''NPL''' (possibly for '''N'''ew '''P'''rogramming '''L'''anguage) was the original name given to what would later become [[IBM]]'s [[PL/I]] programming language.

The 'NPL' name was in effect between [[March 1]] and [[November 30]], [[1964]]. The name was changed to avoid collision with the [[National Physical Laboratory]]. MPL and MPPL were considered before settling on PL/I.

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'''NPL''' was a [[functional language]] with [[pattern matching]] designed by Rod Burstall and John Darlington in 1977. The language allowed certain sets and logic constructs to appear on the right hand side of definitions, E.g.

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''Reference: John Darlington, "Program Transformation and Synthesis: Present Capabilities", Research Report No. 77/43, Dept. of Computing and Control, Imperial College of Science and Technology, London September 1977.''

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'''NPL''' (for '''NonProcedural Language''') was a [[relational database]] language developed by T.D. Truitt et al in 1980 for [[Apple II]] and [[MS-DOS]].

''Reference: "An Introduction to Nonprocedural Languages Using NPL", T.D. Truitt et al, McGraw-Hill 1983.''

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[[Category:Historical programming languages]]

[[Category:PL/I dialects]]

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