This may be a problem. Type erasure might necessitate some tricky use of generics.
On the SVD, if that's a bug, then the method which yields a reference to the data array in realmatrix is also a bug. On Fri, Jul 1, 2011 at 6:53 PM, Ted Dunning <ted.dunn...@gmail.com> wrote: > Actually, the compiler can't do the dispatch correctly. > > For instance, given the following approximately real code: > > Matrix a = new SparseMatrix(...); > Matrix b = new DiagonalMatrix(...); > > This line will not dispatch to a special case method for either > SparseMatrix > or DiagonalMatrix: > > MatrixOperator.times(a, b) > > This is because a and b are just Matrix objects according to the compiler. > > You have to invent a way to do runtime dispatching. > > On Fri, Jul 1, 2011 at 4:45 PM, Greg Sterijevski <gsterijev...@gmail.com > >wrote: > > > There is no magic which will remove the elemental complexity of these > > things. However, the complexity would be concentrated in the operator > > classes, where it probably should be. Furthermore, the type matching > would > > be handled by compiler. Finally, the multiplication routines would grow > as > > a > > need for those operations arises. > > >
