ludal@codespeak.net wrote:
Author: ludal Date: Thu Jan 27 18:06:26 2005 New Revision: 8642
Modified: pypy/dist/pypy/objspace/std/stringobject.py Log: keep a cache of the hash value of strings like CPython does
Hi! I think it is a fine idea to do the hash cache. Just a comment...:
Modified: pypy/dist/pypy/objspace/std/stringobject.py ...
def hash__String(space, w_str): - return W_IntObject(space, hash(w_str._value)) + w_hash = w_str.w_hash + if w_hash is None: + w_hash = W_IntObject(space, hash(w_str._value)) + w_str.w_hash = w_hash + return w_hash
I don't see the point why the hash should be stored as a wrapped value. IMHO, the main use of the hash is inside of dict objects. Wouldn't it make more sense to cache the unwrapped value, since we (as I think) do the hashing in a dict with an unwrapped integer, anyway? It is also more conformant with CPython, where the hash is an internal implementation detail. Maybe I just missed something, so anyway - good night! (Ludovic, I don't have your email contact) cheers - chris -- Christian Tismer :^) <mailto:tismer@stackless.com> tismerysoft GmbH : Have a break! Take a ride on Python's Johannes-Niemeyer-Weg 9A : *Starship* http://starship.python.net/ 14109 Berlin : PGP key -> http://wwwkeys.pgp.net/ work +49 30 802 86 56 mobile +49 173 24 18 776 fax +49 30 80 90 57 05 PGP 0x57F3BF04 9064 F4E1 D754 C2FF 1619 305B C09C 5A3B 57F3 BF04 whom do you want to sponsor today? http://www.stackless.com/