public Cursor(IHostEnvironment env, StreamingDataView <TRow> dataView, Func <int, bool> predicate)
: base(env, dataView, predicate)
{
_enumerator = dataView._data.GetEnumerator();
_currentRow = null;
}
public Cursor(IChannelProvider provider, StreamingDataView <TRow> dataView, Func <int, bool> predicate)
: base(provider, dataView, predicate)
{
_enumerator = dataView._data.GetEnumerator();
_currentRow = null;
}