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

# applied(to:eventHandler:)

Combines every numerical column in a data frame into to a shaped array for each row.

## Declaration

```swift
func applied(to input: DataFrame, eventHandler: EventHandler? = nil) throws -> DataFrame
```