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

# swapAt(unchecked:unchecked:)

## Declaration

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