failing-playground.swift

import Result
import ReactiveCocoa
import Foundation

/*:
 ## Sandbox
 
 A place where you can build your sand castles 🏖.
*/
import XCPlayground
XCPlaygroundPage.currentPage.needsIndefiniteExecution = true

class Token: NSObject {
	func receive() {
		print("cleanup")
	}
}

var token: Token? = Token()
token?.rac_willDeallocSignal()
	.subscribeCompleted { [weak token = token!] in
		print("\(token == nil)")

		NSNotificationCenter
			.defaultCenter()
			.removeObserver(token!,
				name: "RACReceive",
				object: nil)
	}

NSNotificationCenter
	.defaultCenter()
	.addObserver(token!,
	             selector: #selector(Token.receive),
	             name: "RACReceive",
	             object: nil)


NSNotificationCenter
	.defaultCenter()
	.postNotificationName("RACReceive",
	                      object: nil,
	                      userInfo: nil)

token = nil

NSNotificationCenter
	.defaultCenter()
	.postNotificationName("RACReceive",
	                      object: nil,
	                      userInfo: nil)