#20859: Simplify the logic handling the EvaluationMethods mixin class for
Expression
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Reporter: jdemeyer | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-7.3
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: Nicolas M. Thiéry | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/nthiery/optimize_method_lookup_from_the_categories_for_instances_of_cython_classes|
5619a7d0f032f4273069166e6babf938b8c3f40a
Dependencies: #20825, #20686 | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:8 nthiery]:
> `XXXMethods` are meant to be pure mixins / bags of methods;
Given that it's a `class`, I would expect it to behave like a `class`. If
you insist that it should not behave like a `class`, then at least make it
explicit and invent a new metaclass `BagOfMethods` which disallows
inheritance for example.
> they are not supposed to inherit from anything.
How is a random Sage developer supposed to know that? That's one thing
that I really don't like about the category framework in general: it makes
several assumptions which work fine most of the time, but can bite you
badly (the automatic binding is another such one). It almost feels like a
slightly different programming language (that `class` is not ''really'' a
Python class, it's just a dict).
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