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High-performance Java Dataframe with integrated columnar storage (fork of tablesaw)

There is a newer version: 0.9.1

package org.datavec.dataframe.reducing.functions;

import org.datavec.dataframe.api.Table;
import org.datavec.dataframe.reducing.NumericReduceFunction;
import org.datavec.dataframe.reducing.NumericReduceUtils;

/**
 *
 */
public class Count extends SummaryFunction {

    public Count(Table original, String summarizedColumnName) {
        super(original, summarizedColumnName);
    }

    @Override
    public NumericReduceFunction function() {
        return NumericReduceUtils.n;
    }
}