#20354: PPLBackend: Add support for integer variables
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Reporter: mkoeppe | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.2
Component: numerical | Resolution:
Keywords: lp | Merged in:
Authors: Matthias Koeppe | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/mkoeppe/pplbackend__add_support_for_integer_variables|
144a970ae97b209acccf6d38de540401c8c8a587
Dependencies: #20351,#20303 | Stopgaps:
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Comment (by mkoeppe):
Replying to [comment:9 dimpase]:
> I think that the design with these logical switches is just wrong. There
should be `variable_type` parameter, defaulting to `continuous`, with
other possible values `binary` and `integer`.
I agree; at least it matches `is_variable_continuous` etc.; but see
`set_variable_type`, which expresses the same thing using 1, 0, -1.
It's one of several idiosyncrasies of the backend interface.
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Ticket URL: <http://trac.sagemath.org/ticket/20354#comment:10>
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