a Future listener to be passed to #add_listener

Abstract
Actual listeners passed to #add_listener don’t need to extend this class as long as they implement #success and #failure methods
Note
Listener methods can be called from application if a future has been resolved or failed by the time the listener is registered; or from background thread if it is resolved/failed after the listener has been registered.

Inherits

Object

Methods

success

(value)
Void
Return value of this method is ignored.
Parameters:
Name Type Details
value Object actual value the future has been resolved with

failure

(error)
Void
Return value of this method is ignored.
Parameters:
Name Type Details
error Exception an exception used to fail the future