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# ABAddressBookHasUnsavedChanges(_:)

Indicates whether an address book has changes that have not been saved to the Address Book database.

```
func ABAddressBookHasUnsavedChanges(_ addressBook: ABAddressBook!) -> Bool
```

## Parameters

`addressBook`

The address book in question.

## Return Value

`true` when `addressBook` contains unsaved changes, `false` otherwise.

---

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