#18024: Mutability of tableaux part II: replacing CombinatorialObject by
ClonableList
-------------------------------------+-------------------------------------
       Reporter:  darij              |        Owner:
           Type:  defect             |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.6
      Component:  combinatorics      |   Resolution:
       Keywords:  tableaux, sage-    |    Merged in:
  combinat, mutability,              |    Reviewers:  Josh Swanson
  ClonableList, days64               |  Work issues:
        Authors:  Jan Keitel, Darij  |       Commit:
  Grinberg                           |  c1c6a729de7fdbc8f77846afedfd5cf6c9f28005
Report Upstream:  N/A                |     Stopgaps:
         Branch:                     |
  public/TransitionClonable          |
   Dependencies:  #15862             |
-------------------------------------+-------------------------------------

Comment (by jpswanson):

 Oh, I forgot one thing: `RibbonShapedTableau([])` does not error despite
 there being no cell in row 1 or column 1. They are supposed to have "at
 least one cell in row `1`" and in column 1. I'd just tweak the docstring
 to allow an empty ribbon shaped tableau, but one could also throw an error
 on it.

--
Ticket URL: <http://trac.sagemath.org/ticket/18024#comment:24>
Sage <http://www.sagemath.org>
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