Anne Archibald wrote: > On 11/10/2007, Robert Kern <[EMAIL PROTECTED]> wrote: > >> Appending to a list then converting the list to an array is the most >> straightforward way to do it. If the performance of this isn't a problem, I >> recommend leaving it alone. > > Just a speculation: > > Python strings have a similar problem - they're immutable, and so are > even more resistant to growth than numpy arrays. For those situations > where you really really want to grow a srting, python provides > StringIO, where you keep efficiently adding to the string, then > finalize it to get the real string out. Would something analogous be > interesting for arrays?
The Python version of StringIO, at least, just keeps a list, too. The primary benefit of StringIO is that it exposes the file interface. For building up a string/array, using the list is just as convenient (and for arrays, probably more convenient given the variety of shapes one might want to build) and at least as readable. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
