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iOS Build a Simple iPhone App (iOS7) Getting Started What Is an IBOutlet?

Posted by Geoffrey Currie
Geoffrey Currie
318 Points

Can you explain self?

Where is THViewController represented by 'self'?

I can see the code in .m starts with 'self' but I'm not sure why.

2 Answers

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

the self keyword refers to the object thats calling the method. so if I have a property of my view controller called numbers and I want to change the value of that property I would use

[self setNumbers:3];

or 

 self.numbers = 3;

(which calls the setNumbers method behind the scenes)

self in this case refers to the view controller since its the one calling the method

Geoffrey Currie
Geoffrey Currie
318 Points
Geoffrey Currie
Geoffrey Currie
318 Points

Self refers to the scope not the class. (having a hard time with all the terminology and what it refers to)

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

yes, the instance of the class, not the class itself.