Re: [Boost-users] container traits information

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2007-02-07 07:40:05

abir basak wrote:
> Hi,
>    Is there any boost utility which statically determines if a template 
> parameter is const or not? ( MPL library ?)
> 
> I need to design something like boost::sub_range, but little different 
> (It will iterate over arbitrary sequence stored in a vector form, rather 
> than a sequence stored in pair form).
> like,
> template<typename C>
> class index_range{
> private:
>    C* container_;
>    std::vector<size_type> index_;
> };
> container & index will be passed through constructor.
> Now if C is const container it will return const_reference etc.
> 
> Thus what is needed is something like,
> container_traits<const std::vector>::iterator is a const_iterator
> while container_traits<std::vector>::iterator is a iterator etc.

What is wrong with boost::range_iterator<C>::type ?

-Thorsten