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Postings from May 2008
I've written one more set of overloaded-method-invocation tests, attached with a slightly improved version of the classless-root test. The new tests is a class-based scheme. In my vision of using overloaded ->method, the package-based old-style classes become places to put behavior about how the "real" class works. They are, in effect, simple metaclasses. The new test has two of these: Class and Instance. They differ primarily in their universal methods and in how they dispatch. I think that these two tests are really exciting! They show that over the course of a short bus ride, a middling Perl programmer like me can implement two useful (if woefully trivial) new object systems. Unfortunately, the needed syntax currently is dreadful. With -> overloading, custom, purpose-optimized object systems can be made easily, with client code that looks just like good ol' fashioned Perl. my $x = $instance->new; # Fatal: no instance method 'new' on Instance(ParentClass) my $x = $instance->class->new; # okay! It cannot be resisted! -- rjbsThread Next