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

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package org.datavec.dataframe.columns;

import org.datavec.dataframe.api.DateColumn;
import org.datavec.dataframe.filtering.IntPredicate;
import it.unimi.dsi.fastutil.ints.IntArrayList;

import java.time.LocalDate;

/**
 *
 */
public interface DateColumnUtils extends Column, Iterable {

  IntArrayList data();

  IntPredicate isMissing = i -> i == DateColumn.MISSING_VALUE;

  IntPredicate isNotMissing = i -> i != DateColumn.MISSING_VALUE;
}