1# <small>nlohmann::</small>adl_serializer 2 3```cpp 4template<typename, typename> 5struct adl_serializer; 6``` 7 8Serializer that uses ADL ([Argument-Dependent Lookup](https://en.cppreference.com/w/cpp/language/adl)) to choose 9`to_json`/`from_json` functions from the types' namespaces. 10 11It is implemented similar to 12 13```cpp 14template<typename ValueType> 15struct adl_serializer { 16 template<typename BasicJsonType> 17 static void to_json(BasicJsonType& j, const T& value) { 18 // calls the "to_json" method in T's namespace 19 } 20 21 template<typename BasicJsonType> 22 static void from_json(const BasicJsonType& j, T& value) { 23 // same thing, but with the "from_json" method 24 } 25}; 26``` 27 28## Member functions 29 30- [**from_json**](from_json.md) - convert a JSON value to any value type 31- [**to_json**](to_json.md) - convert any value type to a JSON value 32 33## Version history 34 35- Added in version 2.1.0. 36