Where is the (0,0) coordinate located on the screen?

Is the following code valid? NSRect r; r.size = NSMakeSize(10,10); r.origin = NSMakePoint(-5, -5);

What threading API should be used in Cocoa?

What is true regarding notifications?

Is the following code correct? - (void)myMethod:(NSString **)s { *s = [[NSString alloc] init]; }

What is Cocoa?

True or False? Cocoa uses the Model-View-Controller (MVC) design pattern.

There is only one computer you can code IOS on. Which is it?

The Cocoa API for iOS is called?

What IDE does iOS use?

Which extension file is NOT in use in Xcode?