---
title: "appending(_:)"
framework: createmlcomponents
role: symbol
role_heading: Instance Method
path: "createmlcomponents/updatablesupervisedestimator/appending(_:)"
---

# appending(_:)

Composes this updatable estimator with an updatable estimator.

## Declaration

```swift
func appending<Other>(_ other: Other) -> some UpdatableSupervisedEstimator<ComposedTransformer<Self.Transformer, Other.Transformer>, Self.Annotation> where Other : UpdatableEstimator, Self.Transformer.Output == Other.Transformer.Input

```