Contents

-(_:_:)

Creates a column by subtracting each element in the second column from the corresponding element in the first column.

Declaration

static func - (a: MLUntypedColumn, b: MLUntypedColumn) -> MLUntypedColumn

Parameters

a:
A column.
b:
A column.

Return Value

A new column if the columns have the same size and underlying type; otherwise an invalid column.

See Also

Combining columns