---
title: "*(_:_:)"
framework: tabulardata
role: symbol
role_heading: Operator
path: "tabulardata/*(_:_:)-l9r3"
---

# *(_:_:)

Generates a column by multiplying each element in a column type by 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 : Numeric, 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 Multiplying Two Columns

- [*(_:_:)](tabulardata/columnprotocol/*(_:_:)-9db1q.md)
- [*(_:_:)](tabulardata/*(_:_:)-2toor.md)