I am pleased to announce that I have been invited to speak at the next IMECS conference, Hong Kong, March 2007. The chosen topic is given below. A corresponding paper will be available soon. CLOS solutions to binary methods Impementing binary methods in traditional object oriented languages is difficult: numerous problems arise, such as typing (covariance vs. contravariance of the arguments), polymorphism on multiple arguments (lack of multi-methods) etc. The purpose of this paper is to demonstrate how those problems are either solved, or inexistent in the Common Lisp Object System (CLOS). Several solutions for implementing binary methods in CLOS are proposed. They mainly consist in re-programming a binary-method specific object system through the CLOS meta-object protocol. -- Didier Verna, didier@lrde.epita.fr, http://www.lrde.epita.fr/~didier EPITA / LRDE, 14-16 rue Voltaire Tel.+33 (1) 44 08 01 85 94276 Le Kremlin-Bicêtre, France Fax.+33 (1) 53 14 59 22 didier@xemacs.org