Re: Enhancement request

Hi Rob,

Apologies again for the delay in replying.  [is this related to your other
question about hash init?].

I see that a workaround was posted at perlmonks, which is cool.

I also see that others posted the very same point I will make: what you're
proposing breaks the implicit contract; which is that by providing a default,
the value will always be set.  I dread to think how changing that would affect
things, beyond breaking that guarantee.  You say yourself that you understand
the design decision, which at least makes me feel sane :-); but I can't see
how any other way could be consistent.

I appreciate that you're asking for an override button, which is a reasonable
thing, but then, the more overrides we add, the more complex the code gets.
As you've seen, it's already a long way there... [mostly for v1 compatibility,
that is].

Mx.

On Fri, Feb 11, 2005 at 12:49:03PM -0500, Rob Kinyon wrote:
> I'm using 2.05 on Solaris with Perl 5.8.4, standard build.
> 
> I've got the following code:
> 
> use Class::MethodMaker [
>     new => 'new',
>     scalar => [
>         { -type => 'Some::Class', -default_ctor => 'new' },
>         'some_class',
>     ],
> ];
> 
> I'd like to be able to specify something that would allow for the
> following test to pass:
> 
> $object->some_class_reset();
> ok(
>     !$object->some_class_isset(),
>     "I just reset the damn thing, so it shouldn't be set yet!",
> );
> 
> Currently, the code in scalar.pm says that if a default is specified,
> the attribute is consider to be always set, even if it isn't actually
> set yet.
> 
> I understand the design decision behind this, but I'd like to be able
> to override it, if possible.
> 
> Thanks,
> Rob Kinyon
> 
> p.s. I posted about this on Perlmonks at
> http://www.perlmonks.org/?node_id=430184
> 
> 
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