Re: [boost] [modularization] Extract xml_archive from serialization

On 09/18/2014 10:29 PM, Emil Dotchevski wrote:

On Wed, Sep 17, 2014 at 8:14 PM, Andrey Semashev wrote:

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On Wednesday 17 September 2014 14:24:28 Robert Ramey wrote:

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Stephen Kelly-2 wrote

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Robert Ramey wrote:

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The "correct" solution to the above is for date-time to build two modules: date-time and date-time-serialization.

Is this "at the expense of everyone who wants to ship datetime with support for serialization in the package"? Is that 'non-obvious' too? Is this a net- positive?

I think its a much smaller number of people.

anyone who explicitly includes date-time/serialization.hpp will know that he has to ship the data-time-serialization.dll.

Just to be closer to reality, serialization support in DateTime is header- only.

In principle there should be no reason for e.g. time_serialize.hpp to include Boost Serialization headers in order to define the "load" or"save" function templates needed for serialization.

For example, to define:

template<class Archive> void save( Archive & ar, const posix_time::time_duration& td, unsigned int /*version*/) { .... }

one doesn't need to include any serialization headers.

That's true as far as general C++ goes, but you'd very likely need to use BOOST_SERIALIZATION_NVP - and for XML archives it's required to use it - and it's a macro, so two phase lookup won't help? - Volodya