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

# append(_:)

Appends the specified data to the end of this data.

## Declaration

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

## See Also

### Adding Bytes

- [append(_:)](foundation/data/append(_:)-xtlw.md)
- [append(_:count:)](foundation/data/append(_:count:).md)
- [reserveCapacity(_:)](foundation/data/reservecapacity(_:).md)