Bill Spotz wrote: > Yes, this resizing memory management issue is the main reason I haven't > tried to implement it in numpy.i yet.
> <thinking out loud> > A possibly better solution would be to develop a class that inherits > from std::valarray<TYPE> but also implements the array interface > attributes (these attributes would have to be dynamic, in that they > check the std::valarray attributes when accessed rather than storing > copies). I like that, though it's way over my head to implement. However, I'm beginning to have my doubts about valarrays. I'm reading: Josuttis, Nicolai M. 1999. "The C+= Standard Library: A Tutorial and Reference" It's 8 years old now, but he writes: "The valarray classes were not designed very well. In fact, nobody tried to determine if the specification worked" He goes on to suggest that Blitz++ might have more of a future. (though it looks like he's involved with the Boost project now) He also points out some major flaws in the text. In reading, I also see that while valarrays can be used for multidimensional arrays, the semantics are pretty ugly. However, he also says: "In principle...you can change their size. However, changing the size of a valarray is provided only to make a two-step initialization (creating and setting the size)" So maybe the memory re-allocation is such an issue. Does anyone know the status of support for valarrays now? Is there another alternative? At the moment, all we need is a one-d fixed size array. There is Boost::array (and MultiArray), but Boost has always seemed like a big, ugly, hard to build dependency. Can you just grab the code for some of these small pieces by themselves? -Chris -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception [EMAIL PROTECTED] _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
