---
title: "map(_:)"
framework: tabulardata
role: symbol
role_heading: Instance Method
path: "tabulardata/column/map(_:)"
---

# map(_:)

Creates a new column by applying a transformation to every element.

## Declaration

```swift
func map<T>(_ transform: (Column<WrappedElement>.Element) throws -> T?) rethrows -> Column<T>
```

## Parameters

- `transform`: A transformation closure.

## See Also

### Creating Transformed Columns

- [mapNonNil(_:)](tabulardata/column/mapnonnil(_:).md)