---
title: "append(timestamp:data:)"
framework: coremidi
role: symbol
role_heading: Instance Method
path: "coremidi/midipacketlist/builder/append(timestamp:data:)"
---

# append(timestamp:data:)

## Declaration

```swift
@discardableResult func append(timestamp: MIDITimeStamp, data: [UInt8]) -> UnsafePointer<MIDIPacket>?
```