#12823: Allow constants for objective function & deletion of rows in
MixedIntegerLinearProgram
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Reporter: john_perry | Owner: ncohen
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.0
Component: linear programming | Resolution:
Keywords: solver objective | Work issues: failing doctests
Report Upstream: N/A | Reviewers:
Authors: john_perry, ncohen | Merged in:
Dependencies: 12833 | Stopgaps:
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Comment (by john_perry):
I've examined the code for the patch. Only one question: in the Gurobi
backend, for `remove_constraints`, why do you loop and call
`remove_constraint` on each index? The signature for `GRBdelconstrs()`
seems to allow sending an index, just like GLPK and Coin. I'm not looking
at the documentation for it, though, so maybe that's okay.
It's pretty clear that CPLEX is different, so I understand the loop there.
Anyway, I'd like to test the patch ASAP, and give it a positive review,
but -- I don't have either CPLEX or Gurobi installed. I understand those
aren't free like Coin and GLPK. How should I test the doctests? Must I
download them, or can I take you at your word that you've doctested them
and the doctests check out?
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12823#comment:16>
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