# init(receiveSubscription:receiveValue:receiveCompletion:) Creates a type-erasing subscriber that executes the provided closures. ``` init(receiveSubscription: ((any Subscription) -> Void)? = nil, receiveValue: ((Input) -> Subscribers.Demand)? = nil, receiveCompletion: ((Subscribers.Completion) -> Void)? = nil) ``` ## Parameters `receiveSubscription` A closure to execute when the subscriber receives the initial subscription from the publisher. `receiveValue` A closure to execute when the subscriber receives a value from the publisher. `receiveCompletion` A closure to execute when the subscriber receives a completion callback from the publisher. --- 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)