Hans Dieter Pearcey (h...@pobox.com)

Excerpts from Jesse Luehrs's message of Mon Feb 15 19:31:24 -0500 2010:
> I'm not sure what problem you're having, since you didn't post the
> error message, but you probably need the attribute definition to happen
> after the types are defined... pretty sure this would assume you have a
> class named 'MaybeDateTime'.

Correct.

> > subtype 'DateTime' => as 'Object' => where { $_->isa('DateTime') };
>
> Also, this is equivalent to "class_type 'DateTime'".
>
> > subtype 'MaybeDateTime'
> >     => as 'Maybe[Object]'
> > => where { $_->isa('DateTime') or not defined $_ };

And this is "subtype 'MaybeDateTime', as 'Maybe[DateTime]'".

hdp.

Excerpts from Komarov Oleg's message of Sun Feb 14 18:17:07 -0500 2010:
> It turns out that such an object isa 'Moose::Object', but
> Moose::Object::new isn't involved in its creation.

$class->new calls $class->meta->new_object, not the other way around. You have
confused the lower level interface for the higher level one.

hdp.

Excerpts from Ricardo Signes's message of Thu Feb 04 19:20:51 -0500 2010:
> > They were rjbs's baby originally, but I don't think he's actually using them.
>
> FWIW, I am.

LA LA LA LET'S GET RID OF INITIALIZERS

What is it that they do that can't be done any other way?

hdp.

Excerpts from Jesse Luehrs's message of Thu Feb 04 19:00:37 -0500 2010:
> Figuring out how to do it isn't particularly obvious at the moment though.

Yeah.  I mean, I've done it; it's not that much of a pain.  The pain is
remembering all the places that need to be touched, let alone figuring it out
if you haven't done it before.

hdp.

Excerpts from Karen Etheridge's message of Thu Feb 04 15:43:05 -0500 2010:
> I'm satisfied now: there is no usecase for an initializer that couldn't
> be achieved using either a trigger or by modifying the behaviour of the
> attribute's setter.

This may mean that we need to make it easy to inline such a set_value behavior
modification.  I don't know how convenient it is now.

(Inlining in general is not currently very accessible.)

hdp.