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# shouldArchiveValue(forKey:)

Specifies whether the value of the property for a given key is archived.

```
func shouldArchiveValue(forKey key: String) -> Bool
```

## Parameters

`key`

The name of one of the receiver’s properties.

## Return Value

<doc://com.apple.documentation/documentation/Swift/true> if the specified property should be archived, otherwise <doc://com.apple.documentation/documentation/Swift/false>.

## Discussion

Called by the object’s implementation of `encodeWithCoder:`. The object must implement keyed archiving.

The default implementation returns <doc://com.apple.documentation/documentation/Swift/true>.

## See Also

  [Core Animation Programming Guide](https://developer.apple.com/library/archive/documentation/Cocoa/Conceptual/CoreAnimation_guide/Introduction/Introduction.html#//apple_ref/doc/uid/TP40004514)


---

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