class EventHandler::Subscriptions

• EventHandler::Subscriptions
• Reference
• Object

Overview

A bag of Subscriptions that are torn down together. #on adds a tracked subscription and returns it, so a single one can still be re-armed or cancelled individually; #off cancels every remaining one, idempotently.

Defined in:

subscription.cr

Instance Method Summary

• #dispose : Nil

  #dispose/#disposed? aliases of #off/#empty?.

• #disposed? : Bool

  :ditto: — whether the bag has been torn down (holds no subscriptions).

• #empty? : Bool

  Whether the bag holds no subscriptions.

• #off : Nil

  Cancels every tracked subscription and empties the bag.

• #on(target, type : T.class, once = false, async = ::EventHandler.async?, at = ::EventHandler.at_end, &block : T -> Nil) : Subscription forall T

  Subscribes block to type on target, tracking it for a later bulk #off.

Instance Method Detail