Yeah... but I am a fan of the UnsupportedOperationException so I think it should be OK to have something like that in the interface and just throw up if it is called.
2012/1/12 Sébastien Brisard <sebastien.bris...@m4x.org> > 2012/1/12 Ted Dunning <ted.dunn...@gmail.com>: > > One such example is a text retrieval engine. A x is easy since that is > > what the engine does. A' y is very expensive. > > Thanks for this example! So you *do* agree that implementing > operateTranspose() should be optional, don't you? >
