[Dune-devel] Invalid_Rule quadrature rule

[Oliver Sander]

Dear Dune,
dune-geometry contains an enum QuadratureType::Enum which enumerates the available
1d quadrature rules.  This enum contains an entry 'Invalid_Rule = 127'.  This enum
value is never used anywhere.  Also, I cannot even think of a case where it would be
useful.  The enum is only used to request certain quadrature rules from the factory.
When would I ever deliberately ask for an invalid rule?
Does anybody know what Invalid_Rule is there for?  Can anybody think of a use case?
Cheers,
Oliver

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