---
title: "+(_:_:)"
framework: tabulardata
role: symbol
role_heading: Operator
path: "tabulardata/+(_:_:)-1i7oh"
---

# +(_:_:)

Generates a column by adding each element in a column type to the corresponding elements of an optional column type.

## Declaration

```swift
func + <L, R>(lhs: L, rhs: R) -> Column<L.Element> where L : ColumnProtocol, R : OptionalColumnProtocol, L.Element : AdditiveArithmetic, L.Element == R.WrappedElement
```

## Parameters

- `lhs`: A column type.
- `rhs`: An optional column type.

## Return Value

Return Value A new column with the same type as the left column.

## See Also

### Generating a Column by Adding Two Columns

- [+(_:_:)](tabulardata/columnprotocol/+(_:_:)-yc11.md)
- [+(_:_:)](tabulardata/+(_:_:)-3exmp.md)