#16505: Add unset_cache() to remove single keys from a cached_method
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       Reporter:  saraedum           |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  minor              |    Milestone:  sage-6.3
      Component:  misc               |   Resolution:
       Keywords:  cached_method      |    Merged in:
        Authors:  Julian Rueth       |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/saraedum/ticket/16505            |  7b01ec82ee12fbefeb3f475255b6e09562e02a45
   Dependencies:                     |     Stopgaps:
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Description changed by saraedum:

Old description:

> A `cached_method`'s `clear_cache()` clears the entire dictionary of a
> `cached_method`. Currently, there is no way to only remove some keys.
> This is sometimes necessary if values in the cache are not usable anymore
> (e.g. because they are defined in some external expect interface but the
> external session is not running anymore, #16369).

New description:

 A `cached_method`'s `clear_cache()` clears the entire dictionary of a
 `cached_method`. Currently, there is no way to only remove some keys. This
 is sometimes necessary if values in the cache are not usable anymore (e.g.
 because they are defined in some external expect interface but the
 external session is not running anymore).

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Ticket URL: <http://trac.sagemath.org/ticket/16505#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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