---
title: "swapAt(_:_:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/outputspan/swapat(_:_:)"
---

# swapAt(_:_:)

Exchange the elements at the two given offsets

## Declaration

```swift
mutating func swapAt(_ i: OutputSpan<Element>.Index, _ j: OutputSpan<Element>.Index)
```

## Parameters

- `i`: A valid index into this span.
- `j`: A valid index into this span.