Nullable.init when the slot is null.Column.get
Nullable!T get(T)(size_t i)The typed element accessor: T must be the logical element type of the dtype (Timestamp on DATETIME, TimeOfDay on TIME, the physical type on the numeric kinds, bool, string). get!long on a temporal column throws; physical!T gives raw access instead.
Parameters
T | the logical element type, checked against the dtype |
i | the element index (0 .. length) |
Returns
the element, or
Throws
DataFrameException when
i is out of range or T is not
the logical element type of the dtype.