2008/6/21 Robert Kern <[EMAIL PROTECTED]>: > On Sat, Jun 21, 2008 at 17:08, Anne Archibald <[EMAIL PROTECTED]> wrote: >> My suggestion is this: allow negative indices, accepting the cost in >> tight loops. (If bounds checking is enabled, the cost will be >> negligible anyway.) Provide a #pragma allowing the user to assert that >> a certain piece of code uses no negative indices. > > Instead of a #pragma, you could rely on the type of the index. If it > is unsigned, you can do the fast path; if it is signed, you need to > check for and handle potential negatives.
Cute! And then it's easy to make "for i in range(n)" produce unsigned results with no effort on the part of the user. Anne _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
