On 01/11/06, Bill Baxter <[EMAIL PROTECTED]> wrote: > What's the reason iterators are not supported currently? > For instance A[range(0,4)] works for a 1d A, but A[xrange(0,4)] does not. > Are iterators just too inefficient to bother with?
If you want an iterator back, a generator comprehension will do it: (A[i] for i in xrange(0,4)) If the result is to be a numpy array, the size must be known ahead of time (so that the memory can be allocated) and specified. At this point, and considering the overhead in calling back and forth to the generator, the cost of converting to a list (after all, A[list(xrange(0,40)] should work fine) isn't necessarily worth the trouble. A. M. Archibald ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Numpy-discussion mailing list Numpy-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/numpy-discussion
