---
title: hasChanges
framework: coredata
role: symbol
role_heading: Instance Property
path: coredata/nsmanagedobjectcontext/haschanges
---

# hasChanges

A Boolean value that indicates whether the context has uncommitted changes.

## Declaration

```swift
var hasChanges: Bool { get }
```

## Discussion

Discussion If you are observing this property using key-value observing (KVO) you should not touch the context or its objects within your implementation of observeValue(forKeyPath:of:change:context:) for this notification. (This is because of the intricacy of the locations of the KVO notifications—for example, the context may be in the middle of an undo operation, or repairing a merge conflict.) If you need to send messages to the context or change any of its managed objects as a result of a change to the value of hasChanges, you must do so after the call stack unwinds (typically using perform(_:with:afterDelay:) or a similar method). Special Considerations In macOS 10.6 and later, this property is Key-value observing compliant.

## See Also

### Managing unsaved and uncommitted changes

- [save()](coredata/nsmanagedobjectcontext/save().md)