Lesson plan
Alphard (programming language)
Alphard is a Pascal-like programming language for data abstraction and verification, proposed and designed by William A. Wulf, Ralph L. London, and Mary Shaw. The language was the subject of several research publications in the late 1970s, but was never implemented. Its main innovative feature was the introduction of the 'form' datatype, which combines a specification and a procedural (executable) implementation. It also took the generator from IPL-V, as well as the mapping functions from Lisp and made it general case.
Article summary
Alphard is a Pascal-like programming language for data abstraction and verification, proposed and designed by William A. Wulf, Ralph L. London, and Mary Shaw. The language was the subject of several research publications in the late 1970s, but was never implemented. Its main innovative feature was the introduction of the 'form' datatype, which combines a specification and a procedural (executable) implementation. It also took the generator from IPL-V, as well as the mapping functions from Lisp and made it general case.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.