# UnsafeMutableMIDIPacketPointer ``` struct UnsafeMutableMIDIPacketPointer ``` ## Topics ### Initializers [`init(UnsafeMutablePointer)`](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/init(_:)-5z9po) [`init?(UnsafeMutablePointer?)`](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/init(_:)-7ypj1) ### Instance Properties [`var count: Int`](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/count) [`var timeStamp: Int`](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/timeStamp) ### Default Implementations [MutableCollection Implementations](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/MutableCollection-Implementations) [RandomAccessCollection Implementations](/documentation/CoreMIDI/UnsafeMutableMIDIPacketPointer/RandomAccessCollection-Implementations) ## Relationships ### Conforms To [`Collection`](/documentation/Swift/Collection) [`MutableCollection`](/documentation/Swift/MutableCollection) [`Escapable`](/documentation/Swift/Escapable) [`Sequence`](/documentation/Swift/Sequence) [`Copyable`](/documentation/Swift/Copyable) [`BidirectionalCollection`](/documentation/Swift/BidirectionalCollection) [`RandomAccessCollection`](/documentation/Swift/RandomAccessCollection) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)