Method nonzero

cpp/nd/array.hpp:309–316

        }

        void nonzero(icm::bit_vector_view output) const override
        {
            if constexpr (impl::has_nonzero_member_function_v<I>) {
                impl_.nonzero(output);
            } else {
                throw invalid_operation("nonzero(icm::bit_vector_view) method is not implemented for this array.");
            }
        }

    public:
        I impl_;