Dear All,
I am working on some multivariate polynomial ring and I need to be able to
repeatedly evaluate some elements numerically. Since the elements I am
evaluating are few while the number of evaluations is high I thought to cache
the result of this evaluation. Every now and then I need to change the random
sequence of numbers I evaluate at but keep the same polynomials.
@cached_in_parent_method seemed the tool for the job. As the name suggests,
it should stores the cache in the parent so that it should be sufficient to
clear the cache there to propagate the changes to all the elements.
Unfortunately this is not the case; this method store its cache *both* in the
parent and in the element. Apparently this was done in #8611 for speed
reasons. I do not really understand the rationale behind this though. Why do
we need to keep two copies of the cache?
Best
S.
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