Boost C++ Libraries

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deduce_sequence

Description

Applies element conversion to each element in a Forward Sequence. The resulting type is a Random Access Sequence that provides a converting constructor accepting the original type as its argument.

Header

#include <boost/fusion/support/deduce_sequence.hpp>
#include <boost/fusion/include/deduce_sequence.hpp>

Synopsis

namespace traits
{
    template <class Sequence>
    struct deduce_sequence
    {
        typedef unspecified type;
    };
}

Example

template <class Seq>
struct holder
{
    typename traits::deduce_sequence<Seq>::type element;

    holder(Seq const & a)
      : element(a)
    { }
};

template <typename T0, typename T1>
holder< vector<T0 const &, T1 const &> >
make_holder(T0 const & a0, T1 const & a1)
{
    typedef vector<T0 const &, T1 const &> arg_vec_t;
    return holder<arg_vec_t>( arg_vec_t(a0,a1) );
}

See also

deduce