Because of the circular depencency and reference counts not becoming zero? It could be a weak pointer: http://www.boost.org/doc/libs/1_53_0/libs/smart_ptr/weak_ptr.htm
Martin On 11 February 2013 13:02, Anders Logg <[email protected]> wrote: > On Mon, Feb 11, 2013 at 09:00:20AM +0100, Johan Hake wrote: > > I am adding some functionality to MeshDomains, (actually to SubMesh, > > which soon also propagates MeshDomains to the new mesh), and wonder if > > there where any good reasons why a MeshDomain does not have a pointer to > > the parent mesh? > > If such was provided during construction we could skip the annoying mesh > > argument in: > > facets_domains = mesh.domains().facet_domains(mesh) > > Feel free to add it if it is useful. At the time of implementation, I > wanted to avoid a pointer to the parent to keep the number of pointers > floating around at a minimum (especially in this case since it can't > be a shared pointer). > > -- > Anders > > _______________________________________________ > Mailing list: https://launchpad.net/~dolfin > Post to : [email protected] > Unsubscribe : https://launchpad.net/~dolfin > More help : https://help.launchpad.net/ListHelp >
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