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# NSFetchIndexDescription

The description of the index.

```
class NSFetchIndexDescription
```

## Topics

### Creating an Index Description

[`-  initWithName:elements:`](/documentation/CoreData/NSFetchIndexDescription/init(name:elements:))

Creates a fetch index description using the specified name and element descriptions.

### Inspecting an Index Description

[`elements`](/documentation/CoreData/NSFetchIndexDescription/elements)

An array of fetch index element descriptions.

[`entity`](/documentation/CoreData/NSFetchIndexDescription/entity)

The entity description for the fetch index description.

[`name`](/documentation/CoreData/NSFetchIndexDescription/name)

The name of the fetch index description.

[`partialIndexPredicate`](/documentation/CoreData/NSFetchIndexDescription/partialIndexPredicate)

A predicate that selects rows for indexing, if the index is a partial index.

## Relationships

### Conforms To

[`CVarArg`](/documentation/Swift/CVarArg)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`Equatable`](/documentation/Swift/Equatable)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSCopying`](/documentation/Foundation/NSCopying)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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