From: shunsuke (pstade.mb_at_[hidden])
Date: 2007-05-13 19:43:13
Christian Holmquist wrote:
> Hello,
>
> I've had much use of a small traits class for identifying types that matches
> the STL Container concept (roughly) .
> Two functions is made available, is_container<T> and
> container_category_of<T>.
>
> is_container simply evaluates to true_type or false_type,
> container_category_of tries to categorize T with the following tags.
>
> struct non_container_tag {};
> struct container_tag {};
> struct sequence_container_tag : public container_tag {};
> struct associative_container_tag : public container_tag {};
> struct hashed_container_tag : public associative_container_tag {};
>
> template<class T, class Tag = container_tag>
> struct is_container
It must be useful.
It could be more useful if it supports 'is_std_pair' and 'is_std_vector' etc.
Also, <std_pair_fwd.hpp> and <std_vector_fwd.hpp> etc could be useful.
-- Shunsuke Sogame