pybind11/tests/test_sequences_and_iterators.cpp

226     class StringMap {
228         StringMap() = default;
229         StringMap(std::unordered_map<std::string, std::string> init)
241     py::class_<StringMap>(m, "StringMap")
244         .def("__getitem__", [](const StringMap &map, std::string key) {
250         .def("__setitem__", &StringMap::set)
251         .def("__len__", &StringMap::size)
252         .def("__iter__", [](const StringMap &map) { return py::make_key_iterator(map.begin(), map.end()); },
254         .def("items", [](const StringMap &map) { return py::make_iterator(map.begin(), map.end()); },