Re: [boost] [serialization] boost::tuple

From: Manfred Doudar (manfred.doudar_at_[hidden])
Date: 2005-09-24 00:45:58

troy d. straszheim wrote:

>>jarvi wrote:
>>The implementation relies on the cons-list implementation of tuples.
>> It is part of the public interface of Boost.Tuple, but not part of 
>>the TR1 specification. So if one wants to define serialization so 
>>that it works with any TR1 compatible tuple implementation, one must 
>>build the metafunctions around the get<N> templates. The downside of 
>>this is, that more compiler resources will be used.
>>    
>>
>
>So the tuple at boost/tuple/tuple.hpp doesn't have tuple_size<>.  One is
>forced to resort to using either the cons<> stuff, or lots of
>preprocessor stuff.  I went with cons.
>  
>

Am I missing something here?  I know that boost::tuple lacks a _size<>
but I've always found a simple work-around with:

template <typename T>
size_t tuple_size(T tuple)
{
    return boost::tuples::length<T>::value ;
}

... But I agree, that convenience is lacking.

Cheers,
-- 
Manfred
MetOcean Engineers
www.metoceanengineers.com