> And attributes are essentially member variables of objects, which you
> can access as "$obj.foo". Another possible description of
> them might be
> lvalue methods which never take arguments, and which fetch and store
> class-specific pieces of data. Different classes may define their own
> private ".foo" attribute, and these will be distinct even if a class
> inherits from two classes who both have a .foo attribute.
>
> In perl5, attributes are roughly implemented by class instances being
> blessed hash members, and if more than one class uses a particular
> member name, they will end up colliding.
>
Well, we aren't continuing that (collisions), are we?
Mapping attributes to $object{package}:attribute="no clobber!" fixes
that.
my %attribs_from_package_a = %object{package_A} #might return
('MY::package_A::A' => 1,
#
'MY::package_A::Z' => 2)
my %variety_of_attribute_a = %object:attribute_A #might return
('MY::package_a::a' => 1,
#
'DEF::GHI::A' => 2 )
my %all_attribs = %object{} #might return
('DEF::GHI::A' => 2,
#
'MY::package_a::A' => 2,
#
'MY::package_a::Z' => 2)
I suppose
my %all_attribs_no_package = %object{undef?}; #would return (A=>2,Z=>2) or
(A=>1,Z=>2)
This maps 1 to 1 with the XMLNS recommendation.
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