What's the difference between dot syntax and square bracket syntax?

Question

I am going through some walkthroughs fpr Objective-C and I got to many places where I raised my eyebrows. I would love to get them down.

1. Is there a fundamen

Answer 1

1: Your terminology is incorrect. The dot operator is not "method calling", a different operation. It's just a different visual appearance for message sending. There's no difference between [x y] and x.y. The dot syntax can only take one argument though, as it's intended to be used only for property access.

2: The static (compile-time) type of an object has no effect on its behavior at runtime. Your object is still an NSEnumerator even if you're calling it something else.