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Subject: Re: [boost] question about C++11 guidelines
From: Beman Dawes (bdawes_at_[hidden])
Date: 2012-05-03 21:27:34

On Thu, May 3, 2012 at 12:27 PM, Doug Gregor <doug.gregor_at_[hidden]> wrote:
> On Wed, May 2, 2012 at 3:01 PM, Eric Niebler <eric_at_[hidden]> wrote:
>> Say I'm rewriting an existing Boost library and targeting C++11 users. I
>> plan to ship C++03 and C++11 versions of my library side-by-side, so
>> back-compat isn't an issue for the new code. Is there a reason to prefer
>> using Boost's versions of utilities like enable_if, type traits,
>> integral constant wrappers (e.g. mpl::int_), tuples, etc., over the
>> now-standard ones?
>> I'm leaning toward using std:: where I can, and falling back on Boost's
>> versions only when there is a compelling reason.
> Boost in C++11 should use the std:: facilities.
> Boost provides existing practice and reference implementations to aid
> in the standardization process. But we don't actually realize the
> benefits of standardizing Boost components if we never move off our
> own reference implementations. If there is a problem with a vendor's
> implementation of these std:: facilities, we should help that vendor
> get the implementation right.

Long term, +1.

Shorter term, individual libraries probably need to ease into this to
see what issues come up.


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