Flavors is an early object-oriented extension to

Lisp Lisp (historically LISP, an abbreviation of "list processing") is a family of programming languages with a long history and a distinctive, fully parenthesized Polish notation#Explanation, prefix notation. Originally specified in the late 1950s, ...

developed by Howard Cannon at the MIT Artificial Intelligence Laboratory for the Lisp machine and its programming language Lisp Machine Lisp. It is notable as the first programming language to include mixins. Symbolics 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 American National Standards Institute (ANSI) standard document ''ANSI INCITS 226-1994 (S2018)'' (formerly ''X3.226-1994 (R1999)''). The Common Lisp HyperSpec, a hyperli ...

.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