On 2017-12-11 18:35, Simon King wrote:
Well, we want to mix in P.category().element_class (an abstract class)
into whatever P prescribes for its elements. So, P.element_class
should be a class whose mro also contains abstract element classes
defined in the category.
What I did not say is that the mechanism to construct the element class
of P should be coded in the category framework.
Maybe you are misunderstanding me. I am *not* talking about determining
the element class. I talking about the mechanism, *given* the element
class, to *construct* instances of that class.
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