---
title: "append(timestamp:words:)"
framework: coremidi
role: symbol
role_heading: Instance Method
path: "coremidi/unsafemutablemidieventlistpointer/append(timestamp:words:)"
---

# append(timestamp:words:)

## Declaration

```swift
@discardableResult mutating func append(timestamp: MIDITimeStamp, words: [UInt32]) -> UnsafePointer<MIDIEventPacket>?
```