OBJ (programming language)

OBJ is a programming language family introduced by Joseph Goguen in 1976, and further worked on by Jose Meseguer.

Overview[]

It is a family of declarative "ultra high-level" languages. It features abstract types, , (subtypes with multiple inheritance), pattern-matching modulo equations, E-strategies (user control over laziness), module expressions (for combining modules), theories and views (for describing ) for the massively parallel RRM ().

Members of the OBJ family of languages include , , , , Maude, OBJ2, and OBJ3. ^[1]

OBJ2[]

OBJ2 is a programming language with -like parametrised modules and a functional system based on equations.

OBJ3[]

OBJ3 is a version of OBJ based on order-sorted rewriting. OBJ3 is agent-oriented and runs on Kyoto Common Lisp AKCL.

References[]

^ The OBJ family

J. A. Goguen, Higher-Order Functions Considered Unnecessary for Higher-Order Programming. In Research Topics in Functional Programming (June 1990). pp. 309–351.
"Principles of OBJ2", K. Futatsugi et al., 12th POPL, ACM 1985, pp. 52–66.
J. A. Goguen; T. Winkler; J. Meseguer; K. Futatsugi; J.-P. Jouannaud (2000), "Introducing OBJ", in J. A. Goguen; G. Malcolm (eds.), Software Engineering with OBJ: Algebraic Specification in Action, Springer Science+Business Media, New York, NY, pp. 3–167, ISBN 978-1-4757-6541-0

External links[]

The OBJ archive
The OBJ family
Information and OBJ3 manual, PostScript format

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[1] The OBJ family

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