[ad_1] Your terms are all confused. A category is not a superclass or a subclass. A category adds methods to an existing class. A method is not a property, so “defining a delegate method property” does not make sense. You can’t add new instance variables to an object in a category, so you can’t add … Read more
[ad_1] A protocol is an agreed set of methods that are implemented by a class, when that class states it adheres to that protocol. Those methods might be optional or required, this is set in the protocol definition. Best course is to look here (requires sign in) and indeed read the whole of this guide … Read more
[ad_1] Maybe it helps you to check first the tcp/ip network to see if the network is the bottleneck. Try with a ping or even better with a tracert command ( windows ). With the tracert you see each hup and the time that it takes for a packet to go there and back. it’s … Read more