The MPL Reference Manual: joint_view

joint_view

template<
      typename Sequence1
    , typename Sequence2
    >
struct joint_view
{
    // unspecified
    // ...
};

A view into the sequence of elements formed by concatenating Sequence1 and Sequence2 elements.

#include <boost/mpl/joint_view.hpp>

Parameter	Requirement	Description
`Sequence1`, `Sequence2`	Forward Sequence	Sequences to create a view on.

The semantics of an expression are defined only where they differ from, or are not defined in Forward Sequence.

In the following table, v is an instance of joint_view, s1 and s2 are arbitrary Forward Sequences.

Expression	Semantics
joint_view joint_view::type	A lazy Forward Sequence of all the elements in the ranges [`begin::type`, `end::type`), [`begin::type`, `end::type`).
`size::type`	The size of `v`; `size::value == size::value + size::value`; linear complexity; see Forward Sequence.

typedef joint_view<
      range_c
    , range_c
    > numbers;

BOOST_MPL_ASSERT(( equal< numbers, range_c > ));

Boost C++ Libraries