---
title: "init(leftExpressions:rightExpressionAttributeType:modifier:operators:options:)"
framework: appkit
role: symbol
role_heading: Initializer
path: "appkit/nspredicateeditorrowtemplate/init(leftexpressions:rightexpressionattributetype:modifier:operators:options:)"
---

# init(leftExpressions:rightExpressionAttributeType:modifier:operators:options:)

Initializes and returns a “pop-up-pop-up-view”–style row template.

## Declaration

```swift
init(leftExpressions: [NSExpression], rightExpressionAttributeType attributeType: NSAttributeType, modifier: NSComparisonPredicate.Modifier, operators: [NSNumber], options: Int)
```

## Parameters

- `leftExpressions`: An array of doc://com.apple.documentation/documentation/Foundation/NSExpression objects that represent the left side of a predicate.
- `attributeType`: An attribute type for the right side of a predicate. This value dictates the type of view created, and how the control’s object value is coerced before putting it into a predicate.
- `modifier`: A modifier for the predicate (see doc://com.apple.documentation/documentation/Foundation/NSComparisonPredicate/Modifier for possible values).
- `operators`: An array of doc://com.apple.documentation/documentation/Foundation/NSNumber objects specifying the operator type (see doc://com.apple.documentation/documentation/Foundation/NSComparisonPredicate/Operator for possible values).
- `options`: Options for the predicate (see doc://com.apple.documentation/documentation/Foundation/NSComparisonPredicate/Options-swift.struct for possible values).

## Return Value

Return Value A row template initialized using the specified arguments.

## Discussion

Discussion The type of attributeType dictates the type of view created. For example, NSAttributeType.dateAttributeType creates an NSDatePicker object, NSAttributeType.integer64AttributeType creates a short text field, and NSAttributeType.stringAttributeType produces a longer text field. You can resize the views as you want. Predicates do not automatically coerce types for you. For example, comparing a number to a string will raise an exception. Therefore, the attribute type is also needed to determine how the control’s object value must be coerced before putting it into a predicate.

## See Also

### Initializing a Template

- [init(leftExpressions:rightExpressions:modifier:operators:options:)](appkit/nspredicateeditorrowtemplate/init(leftexpressions:rightexpressions:modifier:operators:options:).md)
- [init(compoundTypes:)](appkit/nspredicateeditorrowtemplate/init(compoundtypes:).md)