#651 Declaration of hasHierarchicIndexSet for GeometryGrid
Metadata
| Property | Value |
|---|---|
| Reported by | Oliver Sander (oliver.sander@tu-dresden.de) |
| Reported at | Nov 5, 2009 14:58 |
| Type | Bug Report |
| Version | Git (pre2.4) [autotools] |
| Operating System | Unspecified / All |
| Last edited by | Oliver Sander (oliver.sander@tu-dresden.de) |
| Last edited at | Nov 6, 2009 00:51 |
| Closed by | Oliver Sander (oliver.sander@tu-dresden.de) |
| Closed at | Nov 6, 2009 00:51 |
| Closed in version | Unknown |
| Resolution | Deferred |
| Comment | Documented in dune-grid revision 5902. |
Description
While playing around with GeometryGrid I found out that code will only compile if I declare
namespace Dune {
namespace Capabilities {
template< class Grid >
struct hasHierarchicIndexSet
{
static const bool v = false;
};
template< class Grid >
struct hasHierarchicIndexSet< const Grid >
{
static const bool v = hasHierarchicIndexSet< Grid >::v;
};}
}
early enough. In fact, this piece of code can also be found in the GeometryGrid unit test. If it is left out, the compiler objects:
/export/local-1/daten/users/sander/dune/dune-grid/dune/grid/geometrygrid/grid.hh: In instantiation of âDune::GeometryGrid<Dune::SGrid<2, 2, double>, DeformationFunction>â: dune_semilagrangian.cc:74: instantiated from here /export/local-1/daten/users/sander/dune/dune-grid/dune/grid/geometrygrid/grid.hh:280: error: incomplete type âDune::Capabilities::hasHierarchicIndexSet<Dune::SGrid<2, 2, double> >â used in nested name specifier
Is this a bug or a feature? If it is a feature, could this please be documented somewhere? I would never have guessed the magic code snippet if I hadn't found in the unit test.
A full test case is attached.