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# NSKeyedArchiverDelegate

The optional methods implemented by the delegate of a keyed archiver.

```
protocol NSKeyedArchiverDelegate : NSObjectProtocol
```

## Topics

### Encoding Data and Objects

[`archiver(_:didEncode:)`](/documentation/Foundation/NSKeyedArchiverDelegate/archiver(_:didEncode:))

Informs the delegate that a given object has been encoded.

[`archiverDidFinish(_:)`](/documentation/Foundation/NSKeyedArchiverDelegate/archiverDidFinish(_:))

Notifies the delegate that encoding has finished.

[`archiver(_:willEncode:)`](/documentation/Foundation/NSKeyedArchiverDelegate/archiver(_:willEncode:))

Informs the delegate that `object` is about to be encoded.

[`archiverWillFinish(_:)`](/documentation/Foundation/NSKeyedArchiverDelegate/archiverWillFinish(_:))

Notifies the delegate that encoding is about to finish.

[`archiver(_:willReplace:with:)`](/documentation/Foundation/NSKeyedArchiverDelegate/archiver(_:willReplace:with:))

Informs the delegate that one given object is being substituted for another given object.


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