Function OutputEvalResultToFile

catboost/libs/eval_result/eval_result.cpp:403–448

    }

    void OutputEvalResultToFile(
        const TEvalColumnsInfo& evalColumnsInfo,
        NPar::ILocalExecutor* executor,
        const TVector<TVector<TString>>& outputColumns, // [modelIdx]
        const TDataProvider& pool,
        IOutputStream* outputStream,
        TIntrusivePtr<IPoolColumnsPrinter> poolColumnsPrinter,
        std::pair<int, int> testFileWhichOf,
        bool writeHeader,
        ui64 docIdOffset,
        TMaybe<std::pair<size_t, size_t>> evalParameters, // evalPeriod, iterationsLimit
        double binClassLogitThreshold) {

        bool needPoolColumnsPrinter;
        TVector<THolder<IColumnPrinter>> columnPrinter = InitializeColumnWriter(
            evalColumnsInfo,
            executor,
            outputColumns,
            pool,
            poolColumnsPrinter,
            testFileWhichOf,
            docIdOffset,
            &needPoolColumnsPrinter,
            evalParameters,
            binClassLogitThreshold
        );

        if (writeHeader) {
            TString delimiter = "";
            for (auto& printer : columnPrinter) {
                *outputStream << delimiter;
                printer->OutputHeader(outputStream);
                delimiter = printer->GetAfterColumnDelimiter();
            }
            *outputStream << Endl;
        }
        for (ui32 docId = 0; docId < pool.ObjectsGrouping->GetObjectCount(); ++docId) {
            TString delimiter = "";
            for (auto& printer : columnPrinter) {
                *outputStream << delimiter;
                printer->OutputValue(outputStream, docId);
                delimiter = printer->GetAfterColumnDelimiter();
            }
            *outputStream << Endl;
        }
    }

    void OutputEvalResultToFile(
        const TEvalResult& evalResult,