# The `&` operator

## Returns correct result when used on two `Number`s

### Juttle

    emit -from Date.new(0) -limit 1 | put result = 5 & 6 | view result

### Output

    { "time": "1970-01-01T00:00:00.000Z", result: 4 }

## Produces an error when used on invalid operand type combinations

### Juttle

    emit -from Date.new(0) -limit 1 | put result = null & null | view result

### Errors

  * Invalid operand types for "&": null and null.