# update(_:with:eventHandler:) Updates an impute transformer with a new sequence of examples. ``` func update(_ transformer: inout ImputeTransformer, with input: some Sequence>, eventHandler: EventHandler? = nil) throws ``` ## Parameters `transformer` A transformer to update. `input` A sequence of examples. `eventHandler` An event handler. ## Discussion> Note: You can’t update an impute transformer when using the `median` strategy. --- 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)