---
title: "append(moving:)"
framework: Swift
role: symbol
role_heading: Instance Method
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+, watchOS 27.0+]
path: "swift/uniquearray/append(moving:)-9p4vs"
---

# append(moving:)

Moves the elements of a output span to the end of this array, leaving the span empty.

## Declaration

```swift
mutating func append(moving items: inout OutputSpan<Element>)
```

## Parameters

- `items`: An output span whose contents need to be appended to this array.

## Discussion

Discussion If the array does not have sufficient capacity to hold all new items, then this reallocates the array’s storage to grow its capacity, using a geometric growth rate. note: O(items.count)