---
title: "&&(_:_:)"
framework: createml
role: symbol
role_heading: Operator
path: "createml/mluntypedcolumn/&&(_:_:)"
---

# &&(_:_:)

Creates a column of Booleans by performing a logical AND operation on each row of two columns of Booleans.

## Declaration

```swift
static func && (a: MLUntypedColumn, b: MLUntypedColumn) -> MLUntypedColumn
```

## Parameters

- `a`: A column.
- `b`: A column.

## Return Value

Return Value A new column of Booleans if the column and value have the same Boolean/integer underlying type; otherwise an invalid column.

## See Also

### Combining columns of booleans to generate an untyped column of booleans

- [||(_:_:)](createml/mluntypedcolumn/__(_:_:).md)