Cromwell Enage wrote:
Daniel Wallin wrote:
Yes, that's correct. Although the code has been moved to the Boost CVS and the namespace has been changed to 'parameter'.
Oh, that's where it is, now. Cool!
A second look at the new code revealed that much of the type-extraction functionality I sought has already been implemented in <boost/parameter/aux_/arg_list.hpp>, under the nested struct 'key_value_type' (lines 71-78 and 186-196). However, this struct is defined only for older compilers. Can the definitions be moved out of the conditional macro blocks? That way, a type-extraction metafunction like the following would work:
template < class ArgList, class KW, class Default > struct get_key_value_type : mpl::apply2< typename ArgList::key_value_type , KW , Default > { }
This is now done; it's called index_result. But please see (and comment on) my recent post about rvalues, which is a closely related issue. -- Dave Abrahams Boost Consulting www.boost-consulting.com