---
title: "initializeMemory(as:repeating:count:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/unsafemutablerawpointer/initializememory(as:repeating:count:)"
---

# initializeMemory(as:repeating:count:)

Initializes the memory referenced by this pointer with the given value, binds the memory to the value’s type, and returns a typed pointer to the initialized memory.

## Declaration

```swift
@discardableResult func initializeMemory<T>(as type: T.Type, repeating repeatedValue: T, count: Int) -> UnsafeMutablePointer<T>
```

## Parameters

- `type`: The type to bind this memory to.
- `repeatedValue`: The instance to copy into memory.
- `count`: The number of copies of value to copy into memory. count must not be negative.

## Return Value

Return Value A typed pointer to the memory referenced by this raw pointer.

## Discussion

Discussion The memory referenced by this pointer must be uninitialized or initialized to a trivial type, and must be properly aligned for accessing T. The following example allocates enough raw memory to hold four instances of Int8, and then uses the initializeMemory(as:repeating:count:) method to initialize the allocated memory. let count = 4 let bytesPointer = UnsafeMutableRawPointer.allocate(         byteCount: count * MemoryLayout<Int8>.stride,         alignment: MemoryLayout<Int8>.alignment) let int8Pointer = bytesPointer.initializeMemory(         as: Int8.self, repeating: 0, count: count)

// After using 'int8Pointer': int8Pointer.deallocate() After calling this method on a raw pointer p, the region starting at self and continuing up to p + count * MemoryLayout<T>.stride is bound to type T and initialized. If T is a nontrivial type, you must eventually deinitialize or move from the values in this region to avoid leaks.