Flavors, an early object-oriented extension to

Lisp A lisp is a speech impairment in which a person misarticulates sibilants (, , , , , , , ). These misarticulations often result in unclear speech. Types * A frontal lisp occurs when the tongue is placed anterior to the target. Interdental lisping ...

developed by

Howard Cannon Howard Walter Cannon (January 26, 1912 – March 5, 2002) was an American politician from Nevada. Elected to the first of four consecutive terms in 1958, he served in the United States Senate from 1959 to 1983. He was a member of the Democratic ...

at the MIT Artificial Intelligence Laboratory for the Lisp machine and its programming language Lisp Machine Lisp, was the first programming language to include mixins.

Symbolics Symbolics was a computer manufacturer Symbolics, Inc., and a privately held company that acquired the assets of the former company and continues to sell and maintain the Open Genera Lisp system and the Macsyma computer algebra system.

used it for its Lisp machines, and eventually developed it into New Flavors; both the original and new Flavors were message passing OO models. It was hugely influential in the development of the Common Lisp Object System (CLOS). Implementations of Flavors are also available for

Common Lisp Common Lisp (CL) is a dialect of the Lisp programming language, published in ANSI standard document ''ANSI INCITS 226-1994 (S20018)'' (formerly ''X3.226-1994 (R1999)''). The Common Lisp HyperSpec, a hyperlinked HTML version, has been derived fro ...

.Flavors for Allegro CL
/ref> New Flavors replaced message sending with calling generic functions. Flavors offers and daemons with the default method combination (called ).

Flavors and CLOS features comparison

Flavors offers a few features not found in CLOS: * Wrappers * Automatic lexical access to slots using variables within methods. * Internal flavor functions, macros and substs. * Automatically generated constructors. * options: , , . * function for sending messages. CLOS offers the following features not found in Flavors: * Multimethods * Methods specialized on individual objects (via ). * Methods specialized on Common Lisp types (symbol, integer, ...). * Methods specialized on def-struct types. * Class slots.

Flavors and CLOS features comparison

Terminology

References

Further reading