What are ios apps coded in?
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Please explain what is difference strong and weak reference?
How can mobile application errors be prevented?
What are the different store migration options? How do they work?
If you run an application on device , which has location services.Which location it will show first ?
How to handle concurrency problems in core data?
What json framework supported by ios?
What is the difference between synchronous & asynchronous task ?
Are document objects required for an application? What does they offer?
Differentiate between ‘assign’ and ‘retain’ keyword.
What is the difference between strong and retain.
Explain difference between coredata & sqlite?
Explain what is iphone reference library?