[Dune-devel] convert `enum` to `static const int`

[Ansgar Burchardt]

Hi,

it looks like GCC has new warnings:

    ../dune/grid/test/checkintersectionit.hh:599:58: warning:
    comparison between ‘enum Dune::Grid<[...]>::<unnamed>’
    and ‘enum Dune::Grid<[...]>::<unnamed>’ [-Wenum-compare]

for the expression

    GridType::dimension == GridType::dimensionworld

Is there any downside to changing every constant that is currently a
`enum` to a `static const int`?  (Minus deciding on the signedness, but
that is unrelated to the `enum` -> `static const` conversion.)

Ansgar
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