On Thu, Feb 26, 2004 at 07:30:05PM +0100, Robin Berjon wrote:
: chromatic wrote:
: >With Apocalypse 12 (soon!)
:
: I'm sorry but this just begs for the question: (vaguely) how soon? :)
Well, here's the rough outline. I still have to do some writing on
multiple dispatch, overloading, and delegation, But it's shaping up
pretty well. Should be to alpha state within a week or so, depending
on how much Real Lifeâ intrudes. Then the sixperl cabal has to
hammer on it for a while to remove various intrinsic idiocies.
Overview
Some of the problems with Perl 5 OO
A little too orthogonal
Not quite orthogonal enough
Forced non-encapsulation
A little too minimal
Too much keyword reuse
Too difficult to capture metadata
Inside-out interfaces
Not enough convention
Wrong conventions
Everything possible, but difficult
Perl 5 non-problems
Generating class by running code at compile time
There are many roads to polymorphism
People using a class shouldn't have to think hard
Trust in convention, but keep your powder dry
Classes
Philosophy
Declaration
Traits
Use
Class name semantics
Private classes
Methods
Philosophy
Declaration
Use
Class methods
Class invocant
Class|object invocant
Submethods
Attributes
Philosophy
Declaration
Use
Default values
Object construction
The default constructor
CREATE
BUILDALL
BUILD
Eliminating redundancy in constructor calls
Object deconstruction
DESTROYALL
DESTROY
Dispatch mechanisms
Single dispatch
Multiple dispatch
next Class, next Role, next Multi
last Class, last Role, last Multi
DISPATCHALL/DISPATCH
CLASSWALK
The "multi" modifier
Philosophy
Declaration
Use
Overloading
method prefix:+
method prefix:?
method prefix:~
etc.
Delegation
Compile-time method $:obj.foo()
Run-time method $:obj.*()
Relationship to has
Relationship to does
Naming delegated methods
Delegation of handlers through an array @:handlers.*()
Anonymous delegation for isa emulation?
Class composition with Roles
Philosophy
declaration
Use of Roles at compile time
Use of Roles at run time (mixins)
Open vs closed classes
Collections of classes
In classes
In modules
Versioning
Version declarations
Use of version and author wildcards
Introspection
Other non-OO decisions
: I get all excited whenever I hear "Perl" and "six" in the same sentence,
: and it's building up to be unbearable ;)
Yeah, well...it hurts at least as bad on this end.
Larry
