From: David Abrahams (dave_at_[hidden])
Date: 2005-05-09 10:47:39
Cromwell Enage wrote:
> Daniel Wallin wrote:
>> Yes, that's correct. Although the code has been
>> 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
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