[issue14478] Decimal hashing very slow, could be cached
Antoine Pitrou
report at bugs.python.org
Sat Apr 7 12:19:55 CEST 2012
Antoine Pitrou <pitrou at free.fr> added the comment:
> I recommend that __hash__ should use functools.lru_cache for caching.
Why would you do such a thing? A hash value is a single 64-bit slot, no need to add the memory consumption of a whole dictionary and the runtime cost of a LRU eviction policy when you can simply cache the hash in the object itself (like we already do for strings)...
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nosy: +pitrou
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<http://bugs.python.org/issue14478>
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