The below is an off-site archive of all tweets posted by @mjtsai ever

December 31st, 2007

@bmf I'd usually only copy before returning if threads are involved.

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@bmf I like to return the mutable one as an NSArray and make the client responsible for copying it if it wants to hold onto that value.

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@jimcorreia It spends lots of time finding the right bucket.

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@jimcorreia I have some datasets from SpamSieve where inserting lots of string keys is 100x slower than Tiger. (Sent to Apple a while ago.)

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Too bad the Core Foundation source isn't available yet: http://tinyurl.com/yrzeo9

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It seems that the new string hashing algorithm is *not* the reason for CFDictionary's pathological slowness in Leopard.

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