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Subject: Re: [boost] [random] Speed up binomial and poisson distributions
From: Ross Levine (ross.levine_at_[hidden])
Date: 2009-03-10 01:35:30


On Mon, Mar 9, 2009 at 9:54 PM, Steven Watanabe <watanabesj_at_[hidden]> wrote:
> Ross Levine wrote:
>> I sent Jens an email just now.
>> I have a style questions as well. First of all, this new
>> poisson_distribution is policy-based (don't worry -- it's
>> backwards-compatible with the old one; old code using the
>> poisson_distribution will not need to be changed). Since
>> poisson_distribution resides in the boost namespace, I didn't know if
>> the policies should be placed there as well, or in the boost/random
>> nested namespace. For now, they are in the boost/random/detail
>> namespace and typedef'ed into the boost namespace.
> It's dangerous to define public types in a detail namespace because
> of ADL.
>>  They are named
>> pd_fast, pd_small, and pd_legacy. However, it occurred to me that
>> perhaps having policy classes in the boost namespace wasn't such a
>> good idea, since these classes are not meant to be instatiated
>> directly. At the very least, they could have private constructors and
>> be friends with the poisson_distribution, but I still don't know if
>> they ought to reside in the main boost namespace.
>> If anyone knows any rules for this, let me know. As it is there isn't
>> much mention of this situation in the developer faq.
>> In addition, this header probably needs formal documentation. I am
>> unaware of any stylistic guidelines I should follow.
> They should go in namespace boost::random.
> In Christ,
> Steven Watanabe
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