#19163: LatticePoset creation: Empty argument, better error reporting
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-7.1
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Jori Mäntysalo | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/latticeposet_creation__empty_argument__better_error_reporting|
b42c0e7cabca4264e55291ff5e6114d1d00a0a7b
Dependencies: | Stopgaps:
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Comment (by jmantysalo):
Replying to [comment:10 tscrim]:
> I think this approach of parsing the error message just makes things
needlessly more complicated (and takes extra time if you, say, want to
check if a set of posets are meet-semilattices).
?? Error message is only parsed when there is a message. And to just check
use `is_meet_semilattice()`. I can't see how this would slow down
anything.
> Instead, I would just allow the error from calling
`self._hasse_diagram.meet_matrix()` to propagate up.
It is very irritating if the elements of the lattice are integers. Then we
may got error saying that 5 and 8 have no meet, when actually it is 6 and
10 that have no meet.
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Ticket URL: <http://trac.sagemath.org/ticket/19163#comment:11>
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