How to “concatenate” boost::mpl::vectors

Question

I have to different vectors

mpl::vector
mpl::vector

I\'d like to \"concatenate\" them to for

Answer 1

You can use mpl::copy, which uses mpl::fold internally.

typedef mpl::vector s0;
typedef mpl::vector s1;
typedef mpl::copy<
    s1,
    mpl::back_inserter
>::type concatenated;

BOOST_MPL_ASSERT((
    mpl::equal<
        concatenated,
        mpl::vector
    >
));