67     esp_err_t set_item(const char *key, T value);
69     esp_err_t set_string(const char *key, const char* value) = 0;
92     esp_err_t get_item(const char *key, T &value);
237 template<typename T, typename std::enable_if<std::is_integral<T>::value, void*>::type = nullptr>
240     return static_cast<ItemType>(((std::is_signed<T>::value)?0x10:0x00) | sizeof(T));  in itemTypeOf()
246 template<typename T, typename std::enable_if<std::is_enum<T>::value, int>::type = 0>
249     return static_cast<ItemType>(((std::is_signed<T>::value)?0x10:0x00) | sizeof(T));  in itemTypeOf()
260 esp_err_t NVSHandle::set_item(const char *key, T value) {  in set_item()  argument
261     return set_typed_item(itemTypeOf(value), key, &value, sizeof(value));  in set_item()
265 esp_err_t NVSHandle::get_item(const char *key, T &value) {  in get_item()  argument
266     return get_typed_item(itemTypeOf(value), key, &value, sizeof(value));  in get_item()