What is the difference strong and weak reference?
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What is dispatch queue in ios?
Why do we use synchronized ?
What is delegate protocol in ios?
What is @synthesize?
Explain the difference between nsarray and nsmutablearray?
What is gcd ios?
What json framework supported by ios?
What is block in ios swift?
Where do you test the developed apps if you do not have the device?
UI updation in seperate thread is it possible ?
Can python apps run on ios?
Name and explain the iOS app states.