Re: [Boost-users] [boost.any] Inline allocation of small objects in any.

At Wed, 09 Feb 2011 06:44:42 -0800, Steven Watanabe wrote:

AMDG

On 2/8/2011 11:54 PM, Adarsh Soodan wrote:

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On Wed, Feb 9, 2011 at 1:07 PM, Nevin Liber wrote:

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What are your exception safety guarantees compared with the current implementation of boost::any?

I do not see the exception safety gurantees required of the held value object changing from the original any.hpp.

What about swap? swap is no-throw now.

Just to be a little less opaque about this, everyone is asking because what you did is very similar to what's done in boost::variant, which led to some very interesting problems described in http://www.boost.org/doc/libs/1_45_0/doc/html/variant/design.html#variant.de... with very non-obvious solutions. So you might also consider what happens under assignment when the constructor of the new object throws. -- Dave Abrahams BoostPro Computing http://www.boostpro.com