Manipulation

Expr.alias(name)	Set the name for a column or expression.
Expr.fill_nan(value)	Replace NaN values with the given value.
Expr.fill_null([value, strategy, limit])	Replace null values with the given value.

TableFrame.cast(dtypes, *[, strict])	Cast columns to a new data type.
TableFrame.drop_nans([subset])	Drop rows with NaN values.
TableFrame.drop_nulls([subset])	Drop rows with null values.
TableFrame.fill_nan(value)	Replace all NaN values in the TableFrame with the given value.
TableFrame.fill_null([value])	Replace all null values in the TableFrame with the given value.