/// <summary>
/// Returns a new DataFrame by taking the first `n` rows.
/// The difference between this function and `head` is that `head` returns an array while `limit` returns a new DataFrame.
/// </summary>
/// <param name="num">Number of rows to take from current DataFrame</param>
/// <returns>A new DataFrame containing the first `n` rows</returns>
public DataFrame Limit(int num)
{
return
(new DataFrame(dataFrameProxy.Limit(num), sparkContext));
}
