Re: [Boost-users] [multi_array] std::swap and subarray

I think this solves the problem,  (except for the fact that there it may be a more efficient way by swapping element by element).

complete code: -- #include namespace std { template void swap( boost::detail::multi_array::sub_array lhs, boost::detail::multi_array::sub_array rhs) { boost::multi_array tmp = lhs; lhs = rhs; rhs = tmp; } } // namespace std #include<iostream> int main(){ boost::multi_array a; a.resize( boost::extents[2][2] ); for (int i = 0; i < 2; ++i) for (int j = 0; j < 2; ++j) a[i][j] = (i+1)*10 + j+1; // a[0].swap(a[1]); std::swap( a[0], a[1] ); for (int i = 0; i < 2; ++i) { for (int j = 0; j < 2; ++j) std::cout << a[i][j] << " "; std::cout << std::endl; } return 0; } --