My notes to myself as I read the 2005-08-04 IRC discussion of the MetaModel:
http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=356#l564 Clarification, corrections, and questions welcome. Master document at http://svn.openfoundry.org/pugs/perl5/Perl6-MetaModel/docs/20_000_ft_view.txt +--------------+ | | | Instance | | | +--------------+ | +--------------+ +--------------+ | | | | | Role | | Class | | | | | +--------------+ +--------------+ | +--------------+ | | | MetaClass | | | +--------------+ Instance: * holds an instance of the class it is created from http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=402#l646 * has attributes http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=362#l572 * holds instance data, which maps member names (in the MetaClass?) to values (in the MetaClass instance?) http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=435#l695 * $?CLASS and $?SELF are lexicals which are rebound at each method execution http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=377#l607 * calling 'next METHOD' jumps to a label (called 'METHOD'?) by searching outside the method, back to the dispatcher, then to the resume loop (this is really fuzzy to me, the description more than the concept, I think) http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=379#l609 Class: * is a singleton http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=835#l1333 * holds an instance of the MetaClass it is created from http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=480#l769 * has a 'bless' method which takes a candidate and returns an instance http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=405#l650 * is a thin layer between the meta and user worlds (see also 10000 ft view http://svn.openfoundry.org/pugs/perl5/Perl6-MetaModel/docs/10_000_ft_view.pod) http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-05,Fri&sel=619#l1125 * is a mapping between Name and ID (in member fields) http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=475#l763 * all questions asked of a class are passed to its metaclass http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=628#l1023 MetaClass: * is a singleton http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=835#l1333 * has attribute definitions http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=364#l575 * has _add_method to add methods (all instances magically have the new method available to them) http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=507#l818 * private attributes can only be accessed from methods defined in the same class as the private attribute http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=585#l938 * examples: Perl6::Instance (which defines the UNIVERSAL:: methods 'isa', 'can', and 'AUTOLOAD') http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=653#l1067 http://colabti.de/irclogger/irclogger_log/perl6?date=2005-08-04,Thu&sel=655#l1072 Role: Hmm. Nothing to see hear. -kolibrie
