The untyped flvector can be significantly faster than a regular vector that happens to contain floats, since the compiler can avoid boxing floats in the flvector case. (Not sure what the untyped equivalent of a (Vectorof Float) is tho.)
Robby On Thu, Aug 9, 2012 at 7:18 PM, Neil Toronto <[email protected]> wrote: > On 08/09/2012 03:08 PM, Ray Racine wrote: >> >> I did start with a Vectorof A but figured.... > >> >> >> 4. Less memory since the bulk of data I'm munging loaded in as flat >> float or int vectors. > > > I hadn't thought of this. Early on, `math/array' had an FlVector-backed > array, but I tossed it when timing tests showed that it wasn't any faster > than the current (Strict-Array Float). But your #4 sounds like it might be a > good reason to have something like it. > > FWIW, a (Vectorof Integer) that contains nothing but Fixnums is flat. > > >> I'll try and find some time to swap in your Array A as my underlying and >> see what happens. > > > Awesome! I'm really interested to know what your experience with it will be. > > I'm afraid there's no documentation, yet. :/ On the plus side, the API > should be pretty stable now. > > > Neil ⊥ > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
