# initializeMemory(as:repeating:) Initializes the memory referenced by this buffer slice with the given value, binds the memory to the value’s type, and returns a typed buffer of the initialized memory. ``` @discardableResult func initializeMemory(as type: T.Type, repeating repeatedValue: T) -> UnsafeMutableBufferPointer ``` ## Parameters `type` The type to bind this buffer’s memory to. `repeatedValue` The instance to copy into memory. ## Return Value A typed buffer of the memory referenced by this raw buffer. The typed buffer contains `self.count / MemoryLayout.stride` instances of `T`. ## Discussion The memory referenced by this buffer slice must be uninitialized or initialized to a trivial type, and must be properly aligned for accessing `T`. After calling this method on a raw buffer slice referencing memory starting at `b = base.baseAddress + startIndex`, the region starting at `b` and continuing up to `b + self.count - self.count % MemoryLayout.stride` is bound to type `T` and is initialized. If `T` is a nontrivial type, you must eventually deinitialize or move the values in this region to avoid leaks. If `base.baseAddress` is `nil`, this function does nothing and returns an empty buffer pointer. --- 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)