17-Mar-2014 02:13, Martin Nowak пишет:
On 02/22/2014 09:31 PM, "Marc Schütz" <schue...@gmx.net>" wrote:
But that still doesn't explain why a custom hash table implementation is
necessary. Maybe a lightweight wrapper around built-in AAs is sufficient?
I'm also wondering what benefit this hash table provides.
Getting back to this. The custom hash map originaly was a product of
optimization, the benefits over built-in AAs are:
a) Allocation was amortized by allocating nodes in batches.
b) Allowed custom hash function to be used with built-in type (string).
Not sure how much of that stands today.
--
Dmitry Olshansky
