Method GetTargetClassCount

catboost/libs/data/target.h:298–301

if Target with name does not contain classes returns Nothing()

        // if Target with name does not contain classes returns Nothing()
        TMaybeData<ui32> GetTargetClassCount(const TString& name = "") const {
            auto* classCount = MapFindPtr(Data.TargetsClassCount, name);
            return classCount ? TMaybeData<ui32>(*classCount) : Nothing();
        }

        // after preprocessing - enumerating labels if necessary, etc.
        TMaybeData<TConstArrayRef<TConstArrayRef<float>>> GetTarget(const TString& name = "") const { // [targetIdx][objectIdx]