+(_:_:)
Generates a column by adding each element in a column type to the corresponding elements of an optional column type.
Declaration
func + <L, R>(lhs: L, rhs: R) -> Column<L.Element> where L : ColumnProtocol, R : OptionalColumnProtocol, L.Element : AdditiveArithmetic, L.Element == R.WrappedElementParameters
- lhs:
A column type.
- rhs:
An optional column type.
Return Value
A new column with the same type as the left column.