| 4215 | return m_cache; |
| 4216 | } |
| 4217 | bool next() override { |
| 4218 | const auto success = m_generator.next(); |
| 4219 | if (success) { |
| 4220 | m_cache = m_function(m_generator.get()); |
| 4221 | } |
| 4222 | return success; |
| 4223 | } |
| 4224 | }; |
| 4225 | |
| 4226 | template <typename Func, typename U, typename T = FunctionReturnType<Func, U>> |