Possibly this should be submitted as a bug-fix…
Why does the class Problem store a reference to the CostFunction and a reference to the Constraint?
This seems incredibly bad programming / commenting. A call to create a Problem class of the form:
Problem prob(preCreatedCostFunction, PositiveConstraint(), initialValues);
will fail unpredictably at optimisation time as the Constraint is no longer a valid reference.
If you want to force the CostFunction and the Constraint to be pre-created at the very least this should be commented, better would be to pass a shared pointer (which could be tested).
Simon
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