Dot notation can be used for _?

What is significant about this function declaration? -(void)testFunc:(NSString**)str;

You are worried about threaded access to a property and possible collision in writing. What directive should you use on the property?

What is wrong with this line of code? int temp = 1==1;

What is KVO?

What is the Allocations instrument used for?

What is a dependency in NSOperationQueue?

True or False? You can compare two strings by (string1 == string2)