---
title: "applied(to:eventHandler:)"
framework: createmlcomponents
role: symbol
role_heading: Instance Method
path: "createmlcomponents/composedtransformer/applied(to:eventhandler:)"
---

# applied(to:eventHandler:)

Performs the composed transformation on a single input.

## Declaration

```swift
func applied(to input: ComposedTransformer<Inner, Outer>.Input, eventHandler: EventHandler? = nil) async throws -> ComposedTransformer<Inner, Outer>.Output
```

## Parameters

- `input`: The transformer input.
- `eventHandler`: An event handler.

## Return Value

Return Value An output produced by applying the transformer to the input.

## See Also

### Performing the transformation

- [ComposedTransformer.Input](createmlcomponents/composedtransformer/input.md)
- [ComposedTransformer.Intermediate](createmlcomponents/composedtransformer/intermediate.md)
- [ComposedTransformer.Output](createmlcomponents/composedtransformer/output.md)