Function GetDataFromMap

catboost/libs/data/target.h:261–267

    template <class TData, class TMapType>
    inline TMaybeData<TData> GetDataFromMap(const TMapType& map, const typename TMapType::key_type& key) {
        const auto dataPtr = MapFindPtr(map, key);
        if (dataPtr) {
            return **dataPtr;
        }
        return Nothing();
    }


    class TTargetDataProvider : public TThrRefBase {