NPL

(1)New Programming Language. IBM's original (temporary) namefor PL/I, changed due to conflict with England's "NationalPhysical Laboratory." MPL and MPPL were considered beforesettling on PL/I. Sammet 1969, p.542.

NPL

(2)A functional language with pattern matching designed byRod Burstall and John Darlington in 1977. The languageallowed certain sets and logic constructs to appear on theright hand side of definitions, E.g.

setofeven(X) <= <:x: :="" even="" in="" x="">

The NPL interpreter evaluates the list of generators fromleft to right so conditions can mention any bound variablesthat occur to their left. These were known as set comprehensions. NPL eventually evolved into Hope but lostset comprehensions which were called list comprehensions inlater functional languages.

[John Darlington, "Program Transformation and Synthesis:Present Capabilities", Research Report No. 77/43, Dept. ofComputing and Control, Imperial College of Science andTechnology, London September 1977.]

NPL

(3)NonProcedural Language. A relational database languagedeveloped by T.D. Truitt et al in 1980 for Apple II andMS-DOS.

["An Introduction to Nonprocedural Languages Using NPL",T.D. Truitt et al, McGraw-Hill 1983].

NPL

On drawings, abbr. for nipple.

NPL

Acronym	Definition
NPL➣National Priorities List (US EPA)
NPL➣National Physical Laboratory (UK)
NPL➣Nepal (ISO Country code)
NPL➣Nigeria Premier League (football)
NPL➣Netscape Public License (based on Mozilla Public License)
NPL➣Nati per Leggere (Italian: Born to Read)
NPL➣Non Performing Loan (loans in default or close to it)
NPL➣Nashville Public Library (Nashville, TN)
NPL➣Natural Products Ltd. (AV Thomas Group)
NPL➣Name Processing List
NPL➣Netscape Public License
NPL➣not Proper Label
NPL➣National Priorities List
NPL➣Network Password List
NPL➣Non Procedural Language
NPL➣National Physical Laboratory
NPL➣Newmarket Public Library (Canada)
NPL➣Northern Premier League (Britain)
NPL➣National Puzzlers' League
NPL➣Non-Patent Literature
NPL➣Non-Partisan League
NPL➣Non-Profit Leadership
NPL➣Neuro-Linguistic Programming (behavioral science)
NPL➣Non Parametric Linkage
NPL➣Naz Project London (UK)
NPL➣Northbrook Public Library (Northbrook, IL)
NPL➣National Physical Laboratories (India)
NPL➣National Paintball League
NPL➣Normal Power Level (aviation)
NPL➣New Product Launch
NPL➣Noun Plural
NPL➣New Plymouth, New Zealand - New Plymouth (Airport Code)
NPL➣Non Perceived Light
NPL➣Natural Products Laboratory (Research Triangle Institute)
NPL➣No Pay Leave
NPL➣Nuclear Pumped Laser
NPL➣Northern Pipe Line (Phoenix, AZ)
NPL➣Neenah Public Library (Neenah, Wisconsin)
NPL➣Non Production License
NPL➣Nasopharyngolaryngoscopy
NPL➣Network Planning Letter (Sprint)
NPL➣Navy Point Loma
NPL➣Normal Peacetime Location
NPL➣Newport News Part List
NPL➣Navigation Payload
NPL➣National Price List
NPL➣Network Protocol Library