---
title: reverseObjectEnumerator()
framework: foundation
role: symbol
role_heading: Instance Method
path: foundation/nsorderedset/reverseobjectenumerator()
---

# reverseObjectEnumerator()

Returns an enumerator object that lets you access each object in the ordered set.

## Declaration

```swift
func reverseObjectEnumerator() -> NSEnumerator
```

## Return Value

Return Value An enumerator object that lets you access each object in the ordered set, in order, from the element at the highest index downwards.

## Discussion

Discussion When you use this method with mutable subclasses of NSOrderedSet, you must not modify the ordered set during enumeration. It is more efficient to use the fast enumeration protocol (see NSFastEnumeration). Fast enumeration is available in macOS 10.5 and later and iOS 2.0 and later.

## See Also

### Accessing Set Members

- [contains(_:)](foundation/nsorderedset/contains(_:).md)
- [enumerateObjects(at:options:using:)](foundation/nsorderedset/enumerateobjects(at:options:using:).md)
- [enumerateObjects(_:)](foundation/nsorderedset/enumerateobjects(_:).md)
- [enumerateObjects(options:using:)](foundation/nsorderedset/enumerateobjects(options:using:).md)
- [firstObject](foundation/nsorderedset/firstobject.md)
- [lastObject](foundation/nsorderedset/lastobject.md)
- [object(at:)](foundation/nsorderedset/object(at:).md)
- [subscript(_:)](foundation/nsorderedset/subscript(_:).md)
- [objects(at:)](foundation/nsorderedset/objects(at:).md)
- [index(of:)](foundation/nsorderedset/index(of:).md)
- [index(of:inSortedRange:options:usingComparator:)](foundation/nsorderedset/index(of:insortedrange:options:usingcomparator:).md)
- [index(ofObjectAt:options:passingTest:)](foundation/nsorderedset/index(ofobjectat:options:passingtest:).md)
- [index(ofObjectPassingTest:)](foundation/nsorderedset/index(ofobjectpassingtest:).md)
- [index(_:ofObjectPassingTest:)](foundation/nsorderedset/index(_:ofobjectpassingtest:).md)
- [indexes(ofObjectsAt:options:passingTest:)](foundation/nsorderedset/indexes(ofobjectsat:options:passingtest:).md)