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# registeredNibsByIdentifier

The dictionary of all registered nib files for view-based table view identifiers.

```
var registeredNibsByIdentifier: [NSUserInterfaceItemIdentifier : NSNib]? { get }
```

## Discussion

Each key in the dictionary is the identifier string (given by [`NSUserInterfaceItemIdentifier`](/documentation/AppKit/NSUserInterfaceItemIdentifier)) used to register the nib file in the [`register(_:forIdentifier:)`](/documentation/AppKit/NSTableView/register(_:forIdentifier:)) method. The value of each key is the corresponding [`NSNib`](/documentation/AppKit/NSNib) object.

> Note:
> This method applies only to ``doc://com.apple.appkit/documentation/AppKit/NSView``-based table views.

---

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