pub trait ToDataFrame<'a, I, T>where
T: UtahNum + 'a,{
// Required methods
fn as_df(self) -> Result<DataFrame<T>>
where Self: Sized + Iterator<Item = I>;
fn as_matrix(self) -> Result<Matrix<T>>
where Self: Sized + Iterator<Item = I>;
fn as_array(self) -> Result<Row<T>>
where Self: Sized + Iterator<Item = I>;
}