On Sat, Nov 4, 2017 at 1:53 PM, Peter Dimov via Boost <boost@lists.boost.org
wrote:
James E. King, III wrote:
Making Boost.Random header-only could still be considered an improvement,
whether or not what it depends on is header-only.
It might, but Uuid will still regress from header-only to requiring a library, so this doesn't help.
I was wondering, does it even make sense to have the default RNG of uuids::random_generator set to a PseudoRandomNumberGenerator for boost::uuid? It is very expensive to seed and then use a mersenne twister when compared to just acquiring 16 bytes of entropy. I'd like the default uuids::random_generator to use a random_device implementation (I have successfully moved the implementation I have into uuid detail locally), however if I change the default type in uuids::random_generator that would be a breaking change for anyone using the constructors that take a reference or a pointer... it would be much more efficient to just get 16 bytes of entropy instead.