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Polymorphic Programming Language

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Interactive, extensible programming language type

"PPL (programming language)" redirects here. For the Hewlett-Packard calculator language, seeHP PPL.

ThePolymorphic Programming Language (PPL) was developed in 1969 atHarvard University by Thomas A. Standish. It is aninteractive,extensible language with abase language similar to the languageAPL.^[1]

Theassignment operator<- (or←) has influenced the languageS.^[2]

^Standish, Thomas A. (August 1969). Christensen; Shaw (eds.)."Some features of PPL – a Polymorphic Programming Language".ACM SIGPLAN Notices.4 (8) (Proceedings of Extensible Language Symposium ed.). ACM Digital Library:Association for Computing Machinery:20–26.doi:10.1145/1115858.1115864. Retrieved2018-06-23.
^Chambers, John M. (November 1994)."Evolution of the S Language". Archived fromthe original(PostScript) on 2007-04-09. Retrieved2009-05-06.

Features

Major	Dyalog APL APL2 →APLX SHARP APL NARS → NARS2000°
Dialects	A →A+° APLNext →VisualAPL ELI GNU APL° J° kdb+ K,Q Polymorphic Programming Language (PPL)

Organizations

Business	Ampere Analogic Corporation APL2000 CompuServe Digital Equipment Corporation (DEC) DNA Systems Dyalog Ltd. IBM I. P. Sharp Associates KX Systems Micro Computer Machines (MCM) Science Research Associates Scientific Time Sharing Corporation (STSC) Soliton Incorporated Telecompute Integrated Systems, Inc. Time Sharing Resources (TSR)
Education	Carnegie Mellon University (CMU) University of Maryland

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