Npl

3 definitions found

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:

  NPL
       Netscape Public License (Netscape)
       
       

From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]:



  NPL
       Non-Procedural Language
       
       

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  NPL
       
          1. New Programming Language.  IBM's original (temporary) name
          for PL/I, changed due to conflict with England's "National
          Physical Laboratory."  MPL and MPPL were considered before
          settling on PL/I.  Sammet 1969, p.542.
       
          2. 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.
       
          	setofeven(X) <= <:x: x in X & even(x) :>
       
          The NPL {interpreter} evaluates the list of {generator}s from
          left to right so conditions can mention any bound variables
          that occur to their left.  These were known as {set
          comprehension}s.  NPL eventually evolved into {Hope} but lost
          set comprehensions which were called {list comprehension}s in
          later functional languages.
       
          [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.]
       
          3. NonProcedural Language.  A {relational database} language
          developed by T.D. Truitt et al in 1980 for {Apple II} and
          {MS-DOS}.
       
          ["An Introduction to Nonprocedural Languages Using NPL",
          T.D. Truitt et al, McGraw-Hill 1983].