# decodeIfPresent(_:forKey:configuration:) ``` func decodeIfPresent(_: T.Type, forKey key: KeyedDecodingContainer.Key, configuration: C.Type) throws -> T? where T : DecodableWithConfiguration, C : DecodingConfigurationProviding, T.DecodingConfiguration == C.DecodingConfiguration ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)