What happens when you invoke a method on a nil pointer?
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Describe @objc inference?
How do I get rid of app errors on iphone?
What is the meaning of 'weak' keyword?
Major difference between delegate and notification?
Explain difference between release and autorelease?
What is gcd ios?
What is callback in ios?
What is mvvm in ios swift?
Are the nsmanagedobjectcontext queues serial or concurrent?
What are all the difference between iOS3, iOS4 and iOS5?
Can we use ssl to encrypt the app communication?
Explain the characteristics of ios?