ios - NSOperationQueue (delegate/callback/notification) when operation is added to queue -

is there way know when particular operation added nsoperationqueue instance?

ps: currently, not interested in subclassing nsoperationqueue , overwriting required addoperation apis.

you periodically check operations property , see if changed previous reference (maybe method runs time?). if did check if operation added or not.

this way don't need subclass nsoperationqueue or override addoperation.