cmm@creare.UUCP (Chris Morley) (12/03/89)
Can some one recommend a good object-oriented programming package for Common Lisp (Sun CL or KCL, in particular). What packages are available? Are they PD or commercial? Which are the "best" (in terms of facilities, efficiency)? Any references to documentation that I could get hold of? Thanks for any information. I would appreciate mailed responses, but if interest dictates I can summarize. Chris ...!dartvax!creare!cmm
carm@tove.umd.edu (Richard Chimera) (12/06/89)
In article <1145@creare.UUCP> cmm@creare.UUCP (Chris Morley) writes: >Can some one recommend a good object-oriented programming >package for Common Lisp (Sun CL or KCL, in particular). > >Chris > >...!dartvax!creare!cmm I've worked with only one such system: CLOS (which may or may not also be referred to as PCL--Portable Common Loops). I believe it is public domain written by some folks at some Texas institution of higher learning. I don't know where to get documentation about this package, though I do have a copy of some documentation describing concepts and mechanisms. If you would like a copy, let me know and I can send it via US mail. I liked it alot, I thought it did everything I wanted it to do in terms of inheritance, defining subclasses as combinations of multiple parent classes, etc. There were a couple of bugs we had to get around, and it didn't seem to be incredibly fast, but what do you expect from Lisp (and I was even on a TI Explorer Lisp machine!). Overall, I recommend it. Rick Chimera, Human Computer Interaction Library, University of Maryland
lanning@PARC.xerox.com (Stan Lanning) (12/06/89)
CLOS is a language spec. PCL is a (partial) implementation of that language. It is the result of a lot of work by Gregor Kiczales at Xerox PARC, along with help from a number of others at various institutions. PCL runs in at least the following lisps: Symbolics 7.2, 7.4 Coral 1.2 Lucid 3.0 IBCL (October 15, 1987) Allegro 3.0.1 Golden Common Lisp 3.1 EnvOS Medley CLOS is well on it's way to becoming _the_ OO system for CommonLisp. The CLOS spec contains the following comment: At the X3J13 meeting on June 15, 1988, the following motion was adopted: "The X3J13 Committee hereby accepts chapters 1 and 2 of the Common Lisp Object System, as defined in document 88-002R, for inclusion in the Common Lisp language being specified by this committee..." -- -- smL Stan Lanning lanning@parc.xerox.com Xerox PARC or 3333 Coyote Hill Road lanning.pa@xerox.com Palo Alto, CA 94304 USA (415)494-4880
snicoud@bcsaic.UUCP (Stephen Nicoud) (12/07/89)
In article <1145@creare.UUCP> cmm@creare.UUCP (Chris Morley) writes: >Can some one recommend a good object-oriented programming >package for Common Lisp (Sun CL or KCL, in particular). > >Chris I've worked with only one such system: CLOS (which may or may not also be referred to as PCL--Portable Common Loops). I believe it is public domain written by some folks at some Texas institution of higher learning. I don't know where to get documentation about this package, though I do have a copy of some documentation describing concepts and mechanisms. If you would like a copy, let me know and I can send it via US mail. I liked it alot, I thought it did everything I wanted it to do in terms of inheritance, defining subclasses as combinations of multiple parent classes, etc. There were a couple of bugs we had to get around, and it didn't seem to be incredibly fast, but what do you expect from Lisp (and I was even on a TI Explorer Lisp machine!). Overall, I recommend it. CLOS (Common Lisp Object System) "is an object-oriented extension to Common Lisp... It is based on generic functions, multiple inheritance, declarative method combination, and a meta-object protocol." CLOS will be part of the ANSI Common Lisp Standard (X3J13). A copy of the CLOS specification can be obtained via anonymous ftp from arisia.xerox.com (in the /pcl/doc directory) PCL (Portable Common Loops) is an implementation of CLOS designed to be portable to many different Common Lisps. PCL was developed by Xerox PARC. PCL can be obtained via anonymous ftp from arisia.xerox.com (/pub/pcl.tar.Z). A mailing list exists for PCL discussions (send to CommonLoops-coordinator@xerox.com for a request to be added to the list or for any PCL-related questions). Most, if not all, Common Lisp vendors will have (if not already) include CLOS in their Common Lisp implementations. You can expect that PCL's performance would not be as efficient as the native implementations. Flavors is a popular object-oriented system available in many Lisp implementations. Flavors has an extensive user base because of its pervasive use on Lisp Machines. -- Stephen Nicoud <snicoud@atc.boeing.com> uw-beaver!bcsaic!snicoud Boeing Advanced Technology Center for Computer Sciences