---
title: "append(_:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/nsmutabledata/append(_:)"
---

# append(_:)

Appends the content of another data object to the receiver.

## Declaration

```swift
func append(_ other: Data)
```

## Parameters

- `other`: The data object whose content is to be appended to the contents of the receiver.

## See Also

### Adding Bytes

- [append(_:length:)](foundation/nsmutabledata/append(_:length:).md)
- [increaseLength(by:)](foundation/nsmutabledata/increaselength(by:).md)