# allocate(capacity:) Allocates uninitialized memory for the specified number of instances of type `Element`. ``` static func allocate(capacity count: Int) -> UnsafeMutableBufferPointer ``` ## Parameters `count` The amount of memory to allocate, counted in instances of `Element`. ## Discussion The resulting buffer references a region of memory that is bound to `Element` and is `count * MemoryLayout.stride` bytes in size. The following example allocates a buffer that can store four `Int` instances and then initializes that memory with the elements of a range: ``` let buffer = UnsafeMutableBufferPointer.allocate(capacity: 4) _ = buffer.initialize(from: 1...4) print(buffer[2]) // Prints "3" ``` When you allocate memory, always remember to deallocate once you’re finished. ``` buffer.deallocate() ``` --- 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)