Maybe setAllEntries? That would be consistent with setEntry? What about RealVector? The method set(double) should be renamed also? Sébastien
2011/8/22 Ted Dunning <ted.dunn...@gmail.com>: > On Mon, Aug 22, 2011 at 1:27 PM, Phil Steitz <phil.ste...@gmail.com> wrote: > >> I think it would be good to add this, but it would probably be >> better to give it a different name. What name, I am not sure. >> Maybe setAll or fill. Might also be useful to have versions that >> fill submatrics. >> > > Mahout allows this via overloading of an assign method. > Matrix.assign(double) over-writes all cells with a constant value. > Matrix.assign(Matrix) copies data into the target. x.assign(Matrix y, > BinaryFunction f) does element-wise x_ij = f(x_ij, y_ij) > > >> Here is a little joke to lighten things up a bit. What if we just >> allow people to specify negative indices to mean "everything." So >> for example, setEntry(-1, -1, 0) sets all entries to 0, setEntry(1, >> -1, 0) sets the first row to 0. Just kidding ;) >> > > Can be useful. > > I find the TCL convention more useful where -1 refers to the last element of > a vector. > > This sort of thing does tend to freak out the more mathematically inclined > and it does make it harder to catch errors in mathematical code since it > mutes indexing errors. > --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
