public ListColumn(IColumn <T> values, Nullability nullability = Nullability.DefaultToNull)
{
_indicesInner = new NumberListColumn <int>();
_indices = NullableColumn <NumberList <int> > .Wrap(_indicesInner, nullability);
_values = values;
}
public DictionaryColumn(IColumn <TKey> keys, IColumn <TValue> values, Nullability nullability = Nullability.DefaultToNull)
{
_keys = keys;
_values = values;
_pairsInner = new NumberListColumn <int>();
_pairs = NullableColumn <NumberList <int> > .Wrap(_pairsInner, nullability);
// Comparer for sorting Dictionary Keys, picked up by ColumnDictionary.
// Comparer not exposed as argument because column won't work if serialized Dictionaries were sorted differently than comparer would sort.
_keyComparer = (typeof(TKey) == typeof(string) ? (IComparer <TKey>)StringComparer.Ordinal : new DefaultComparer <TKey>());
}