---
title: "flatMap(_:)"
framework: swift-package-manager
role: symbol
role_heading: Instance Method
path: "swift-package-manager/documentation/packageplugin/filelist/flatmap(_:)-5lmbq"
---

# flatMap(_:)

Inherited from Sequence.flatMap(_:).

## Declaration

```swift
func flatMap<ElementOfResult>(_ transform: (Self.Element) throws -> ElementOfResult?) rethrows -> [ElementOfResult]
```