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Polymorphic Programming Language

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The Polymorphic Programming Language (PPL) was developed in 1969 at Harvard University by Thomas A. Standish.

The '<-' (or '') assignment operator has played an influence in the S programming language.

References

  • T.A. Standish. 1969. "Some features of PPL — a Polymorphic Programming Language". Proceedings of Extensible Language Symposium. Christensen and Shaw, Eds. SIGPLAN Notices, Vol 4, Aug. 1969.