Memory leak unsubscribing using anonymous delegate

Unity Courses Talk
#1

If you subscribe like this player.Health.OnDie += health => HandlePlayerDie(player); then you cannot unsubscribe using player.Health.OnDie -= health => HandlePlayerDie(player);, because it is a reference to a new anonymous delegate.

It can be validated with the following experiment:

       public event Action Test;

        private void Start()
        {
            Test += () => OnTest();
            Test -= () => OnTest();
            
            Test?.Invoke();
        }
      
        private void OnTest()
        {
            Debug.LogWarning("DID NOT UNSUBSCRIBE");
        }

Better approach would be resolving tank player from Health object inside a method.

Privacy & Terms