[boost] [hash] Type trait for hash functions that are well distributed.

Subject: [boost] [hash] Type trait for hash functions that are well distributed.
From: Daniel James (dnljms_at_[hidden])
Date: 2014-02-23 15:42:06

Hi,

I'm thinking about adding a type trait for hash functions to indicate
if it's appropriate to use them with a "power of 2" hash table. This
would let hash tables be more efficient when using an appropriate hash
function, especially when compiling for 64 bit. Any thoughts on how
this should be designed? I have a rough design in mind (similar to the
allocator_traits propagation traits), but would like to hear other's
ideas first.

thanks,

Daniel