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Concept
Poplog
Summary
Poplog is an open source, reflective, incrementally compiled software development environment for the programming languages POP-11, Common Lisp, Prolog, and Standard ML, originally created in the UK for teaching and research in Artificial Intelligence at the University of Sussex, and later marketed as a commercial package for software development as well as for teaching and research. It was one of the initiatives supported for a while by the UK government-funded Alvey Programme.
After an incremental compiler for Prolog had been added to an implementation of POP-11, the name POPLOG was adopted, to reflect the fact that the expanded system supported programming in both languages. The name was retained, as a trade mark of the University of Sussex, when the system was later (mid 1980s) extended with incremental compilers for Common Lisp and Standard ML based on a set of tools for implementing new languages in the Poplog Virtual Machine. The user-accessible incremental-compiler tools that allow compilers for all these languages to be added also allow extensions to be made within a language to provide new powers that cannot be added using standard macros that merely allow new text to be equivalent to a longer portion of old text.
For some time after 1983, Poplog was sold and supported internationally as a commercial product, on behalf of the University of Sussex by Systems Designers Ltd (SDL), whose name changed as ownership changed. The main development work continued to be done by a small team at Sussex University until 1998, while marketing, sales, and support (except for UK academic users, who dealt directly with the Sussex team) was done by SDL and its successors (SD, then SD-Scicon then EDS) until 1991. At that time a management buy-out produced a spin-off company Integral Solutions Ltd (ISL), to sell and support Poplog in collaboration with Sussex University, who retained the rights to the name 'Poplog' and were responsible for the core software development while it was a commercial product.
Official source
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