Lesson plan
FL (programming language)
FL (for Function Level) is a programming language created at IBM Research – Almaden, California by John Backus, John Williams, and Edward Wimmers in the 1980s and documented in a report from 1989. FL was designed as a successor of Backus's earlier FP language, providing specific support for what Backus termed function-level programming. FL is a dynamically typed strict functional programming language with throw and catch exception semantics much as in ML. Each function has an implicit history argument which is used for doing things like strictly functional input/output (I/O), but is also used to link to C code. For optimizing, there exists a type system which is an extension of Hindley–Milner type system inference.
Article summary
FL (for Function Level) is a programming language created at IBM Research – Almaden, California by John Backus, John Williams, and Edward Wimmers in the 1980s and documented in a report from 1989. FL was designed as a successor of Backus's earlier FP language, providing specific support for what Backus termed function-level programming. FL is a dynamically typed strict functional programming language with throw and catch exception semantics much as in ML. Each function has an implicit history argument which is used for doing things like strictly functional input/output (I/O), but is also used to link to C code. For optimizing, there exists a type system which is an extension of Hindley–Milner type system inference.
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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?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.