On Jan 19, 2010, at 10:09 AM, Paul Bruneau wrote:
When I want to find the key(s) for a given object, I use the - allKeysForObject method
This is fine, but keep in mind that it's a lot slower since it does a linear search instead of a hash lookup. (It's O(n) instead of O(1).)
If you're putting this in code you know in advance is extremely performance sensitive, or will operate on huge data sets; or if you profile it later and find this is a bottleneck; you should go to a reverse dictionary mapping instead.
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