Sorry, I mistook the context of that statement due to lazy reading.

Another approach would be a bitmap.

You could even avoid a bitmap by, for example, sharding odd hash values into one hash table and even hash values into a second hash table. Then the 0 bit could indicate "empty" though the meaning of the value of that bit would be reversed between the two tables.

- tye        

In reply to Re^9: RFC: Is there a solution to the flaw in my hash mechanism? (sentinel) by tye
in thread RFC: Is there a solution to the flaw in my hash mechanism? (And are there any others?) by BrowserUk

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