---
title: "deinitialize(count:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/unsafemutablepointer/deinitialize(count:)"
---

# deinitialize(count:)

Deinitializes the specified number of values starting at this pointer.

## Declaration

```swift
@discardableResult func deinitialize(count: Int) -> UnsafeMutableRawPointer
```

## Parameters

- `count`: The number of instances to deinitialize. count must not be negative.

## Return Value

Return Value A raw pointer to the same address as this pointer. The memory referenced by the returned raw pointer is still bound to Pointee.

## Discussion

Discussion The region of memory starting at this pointer and covering count instances of the pointer’s Pointee type must be initialized. After calling deinitialize(count:), the memory is uninitialized, but still bound to the Pointee type.