#9265: Remove `CombinatorialClass` from sage.combinat.tableau
------------------------------------------------+---------------------------
Reporter: jbandlow | Owner: sage-combinat
Type: enhancement | Status: closed
Priority: major | Milestone: sage-5.4
Component: combinatorics | Resolution: fixed
Keywords: tableaux, combinatorics | Work issues:
Report Upstream: N/A | Reviewers: Andrew
Mathas, Anne Schilling
Authors: Jason Bandlow, Andrew Mathas | Merged in:
sage-5.4.beta0
Dependencies: #5457 | Stopgaps:
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Comment (by jdemeyer):
This patch badly abuses `assert` and `AssertionError`. `assert` should
not be used for control flow. An assert checks something which should
always be true, a failed assertion is always a bug in the program.
For example:
{{{
sage: Tableau([[1],[2,3]])
Traceback (most recent call last):
...
AssertionError: A tableau must be a list of lists of weakly
decreasing length.
}}}
This is a simple user mistake, for which `assert` is not right.
I think this must be fixed.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9265#comment:42>
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