Article · Wikipedia archive · Last revised Jul 13, 2026

Polymorphic Programming Language

The Polymorphic Programming Language (PPL) was developed in 1969 at Harvard University by Thomas A. Standish. It is an interactive, extensible language with a base language similar to the language APL.

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Jul 13, 2026
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The Polymorphic Programming Language (PPL) was developed in 1969 at Harvard University by Thomas A. Standish. It is an interactive, extensible language with a base language similar to the language APL.1

The assignment operator <- (or ←) has influenced the language S.2

References

References

  1. 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. Retrieved 2018-06-23.
  2. Chambers, John M. (November 1994). "Evolution of the S Language". Archived from the original (PostScript) on 2007-04-09. Retrieved 2009-05-06.