Explain layer objects?
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What is a view controller in ios?
. Apart from incorporating views and controls, what else an app can incorporate?
Why do all model object attributes get marked with @dynamic and not synthesised? What does @dynamic mean?
What is nsmanagedobjectmodel?
What are properties in ios?
What is meaning of 'assign' keyword?
What is block in ios?
What is made up of nserror object?
Can you please explain the difference between nsarray and nsmutablearray?
What happens when we invoke a method on a nil pointer?
Functionality of accelerometer of an iphone
What is the concurrency how many ways you know to achieve concurrency?