lookup generic methods on category

[robertwb]

No caching is done yet, but it shouldn't be too hard to add at some point.

CC: @mwhansen

Component: coercion

Issue created by migration from https://trac.sagemath.org/ticket/4301

[craigcitro]

comment:1

Attachment: 4301-cat-lookup.patch.gz

So this patch looks good -- I believe that the code does what it claims to.

However, there are no doctests.

So if you say "there are no categories that implement anything like this yet," I believe you -- but let's add one, and put it in the docstring, so that we can use this as an example.

[robertwb]

comment:3

See http://sagetrac.org/sage_trac/wiki/CategoriesRoadMap

[mwhansen]

comment:4

I'm going to go ahead and close this as invalid since we decided on another approach for handling these generic method lookups.