Denis Koroskin, el 16 de noviembre a las 19:03 me escribiste: > On Mon, 16 Nov 2009 18:58:42 +0300, Frank Benoit > <keinfarb...@googlemail.com> wrote: > > >Reminds me of an older thread: > >http://www.digitalmars.com/d/archives/digitalmars/D/Implicit_castable_structs_64764.html > > I recall it, but I still think "alias this" is the way to go: > > struct GtkWidget{ /* data member */ } > > struct GtkContainer{ > GtkWidget widget; // mixin GtkWidget; could also work, though > // more data members > > alias this &widget; // how would you do the same without a named mixin? > // And what's the benefit of named mixin over plain old aggregation? > }
See how a struct mixin could add an implicit/explicit cast to the mixed in structs. -- Leandro Lucarella (AKA luca) http://llucax.com.ar/ ---------------------------------------------------------------------- GPG Key: 5F5A8D05 (F8CD F9A7 BF00 5431 4145 104C 949E BFB6 5F5A 8D05) ---------------------------------------------------------------------- Con vos hay pica, patovica! -- Sidharta Kiwi