| 56 | }; |
| 57 | template <class T> |
| 58 | bool is_squared(std::vector<std::vector<T>> const& in) { |
| 59 | std::size_t cols = max_cols(in); |
| 60 | if (cols != num_rows(in)) { |
| 61 | return false; |
| 62 | } else { |
| 63 | for (std::size_t i = 0; i < in.size(); i++) { |
| 64 | if (cols != in[i].size()) { |
| 65 | return false; |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | return true; |
| 70 | }; |
| 71 | |
| 72 | template <class T> |
| 73 | std::size_t num_cols(std::vector<T> const& in) { |