FL (programming language)

FL
Paradigm	Function-level, functional
Designed by	John Backus; John Williams; Edward Wimmers
First appeared	1989
Typing discipline	Dynamic
Influenced by
	FP
Influenced
	J

FL (short for "Function Level") is a programming language created at the IBM Almaden Research Center by John Backus, John Williams, and Edward Wimmers in the 1980s and documented in a report from 1989.^[1] FL was designed as a successor of Backus' 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 like 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 for linking to C code. For doing optimization, there exists a type-system which is an extension of Hindley–Milner type inference.

Uses

PLaSM is a "geometry-oriented extension of a subset of the FL language"^[2] first described in 1992.

References

↑ Aiken, Alexander; Williams, John H.; Wimmers, Edward L.. "The FL Project: Design of a Functional Language". Stanford University. http://theory.stanford.edu/~aiken/publications/trs/FLProject.pdf.
↑ "Introduction to FL and PLaSM". http://www.plasm.net/docs/tutorial/introduction_to_fl_and_plas.html.

External links

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[1] Aiken, Alexander; Williams, John H.; Wimmers, Edward L.. "The FL Project: Design of a Functional Language". Stanford University. http://theory.stanford.edu/~aiken/publications/trs/FLProject.pdf.

[2] "Introduction to FL and PLaSM". http://www.plasm.net/docs/tutorial/introduction_to_fl_and_plas.html.

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