I added a note in the Moose::Meta::Role documentation yesterday to the effect
that applying a role did not do any checks to make sure that the target had not
already consumed the role you were attempting to apply.
I always find myself writing "apply role unless does role".
Would anyone object to this functionality being in Moose::Util? e.g.
apply_all_missing_roles(
$obj, "My::First::Role", "Another::Role::With::A::Long::Name"
);
(replace 'missing' with some more appropriate term if one exists)
hdp.
