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iOS Objective-C Basics (Retired) Introduction to Objective-C Objective-C Syntax and @property

Posted by Taylor Lisney
Taylor Lisney
436 Points

Still waiting for the right answer and explanation. Can someone help?

@interface Product : NSObject { int _qty; }

  • (int) _______;
  • (void) ________ : (int) qty;

@end

There's not enough information at this point to know how to define the answer. Should there be underscores? No? No idea. Please help?

3 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the quiz wants you to define a getter and setter method for the _qty instance variable.

getter and setter methods dont use underscores in their names (they just use the name of the ivar without the _). If I had an integer instance variable named _someVar the getter method definition would be

-(int)someVar;

and the setter method definition would be

-(void)setSomeVar:(int)var;

does that clear things up?

Taylor Lisney
Taylor Lisney
436 Points
Taylor Lisney
Taylor Lisney
436 Points

It does! Thanks very much. The syntax is tripping me up real bad on these lessons. I appreciate it.

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

yeah objective-C syntax is very confusing compared to other languages.

agreatdaytocode
agreatdaytocode
24,757 Points
agreatdaytocode
agreatdaytocode
24,757 Points

try Swift

Taylor Lisney
Taylor Lisney
436 Points

It's next on the list!