void copy_array (Array1& source, Array2& dest) {
assert(std::equal(source.shape(),source.shape()+source.num_dimensions(),
dest.shape()));
// Dispatch to the proper function
typedef typename Array1::element element_type;
copy_dispatch<element_type>::
copy_array(source.begin(),source.end(),dest.begin());
}
static void copy_array (const Array1& source, Array2 dest) {
copy_array(source.begin(),source.end(),dest.begin());
}