Hello Mark! 1)
MRD> One idea is it have Custom Iterators. A Custom Iterator could walk MRD> through the objects in a collection (or the double values in an array) These iterators would also provide other nice capability, receiving the values incrementally, "on the fly" (say, from an InputStream or properly obtained MySQL result set) w/o having to allocate intermediate storage for them. 2) MRD> Then its up to the implementor of the Iterator how "efficient" it works MRD> with the collection or double[], in the double[] case it can just return the MRD> value, in the Collection case it may preform a number of tasks prior to MRD> returning a value. Looks like it still has to be decided upon whether the iterator should return double or Object does not it? Are the questions a) double or Object b) iterator or not iterator orthogonal? 3) BTW, probably does the future introduction of Generics (Java 1.5) promise any opportunities to work with primitive values and yet have no code duplication (a bit like STL)? 4) Apologies, if this break-in was totally "the wrong sound", I certainly lack the knowledge of the current math code and interfaces, speaking more "in theory" :-) -Anton P.S. As for the 'double' vs 'Object' issue, if I ever have to use a math library I, as an at most purely applied mathematician, (yup, my diploma says I am, but I really doubt that myself :) will probably prefer 'double'. But it's not a qualified opinion, plz disregard it :) I wouldn't write a separate mail on this as there already are qualified advocates for both viewpoints! The Funtor-style approach looks promising but I've got deep reservations about performance (and yes, that's what C-background guys will probably think, not only Fortran-background! ;-) And also if all we need are real value computations, the 'double' interfaces are probably more "usable", "user-friendly" and less "scaring". --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
