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# &&(_:_:)

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

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

## Parameters

`a`

A column.

`b`

A column.

## Return Value

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

---

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