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# containsValue(forKey:)

Returns a Boolean value that indicates whether the archive contains a value for a given key within the current decoding scope.

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

## Parameters

`key`

A key in the archive within the current decoding scope. `key` must not be `nil`.

## Return Value

<doc://com.apple.documentation/documentation/Swift/true> if the archive contains a value for `key` within the current decoding scope, otherwise <doc://com.apple.documentation/documentation/Swift/false>.

## Discussion

---

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