# fitted(to:eventHandler:) Fits a transformer to a sequence of examples. ``` func fitted(to input: InputSequence, eventHandler: EventHandler?) async throws -> Self.Transformer where InputSequence : Sequence, InputSequence.Element : TemporalSequence, Self.Transformer.Input == InputSequence.Element.Feature ``` ## Parameters `input` A sequence of examples. `eventHandler` An event handler. ## Return Value The fitted transformer. --- 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)