/// <summary>
/// Sorts rows. If <i>columns </i> is null, it is replaced by the first
/// <see cref="DataFrameSorting.LimitNumberSortingColumns"/> columns.
/// </summary>
public void Sort(IEnumerable <int> columns = null, bool ascending = true)
{
if (columns == null)
{
columns = Enumerable.Range(0, Math.Min(ColumnCount, DataFrameSorting.LimitNumberSortingColumns));
}
DataFrameSorting.Sort(this, columns, ascending);
}
/// <summary>
/// Sorts rows.
/// </summary>
public void Sort(IEnumerable <string> columns, bool ascending = true)
{
DataFrameSorting.Sort(this, columns.Select(c => GetColumnIndex(c)), ascending);
}
/// <summary>
/// Sorts rows.
/// </summary>
public void Sort(IEnumerable <int> columns, bool ascending = true)
{
DataFrameSorting.Sort(this, columns, ascending);
}