What size is 1x and 2x?
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What is block in ios?
Which framework delivers event to custom object when app is in foreground?
What are the features of ios?
What is mvc? Mvc architecture of iphone app.
What is nsoperation and nsoperationqueue in ios?
Explain the usage of struct?
What is the difference between delegates and notifications in iOS operating system?
Explain commonly used third party libraries
Differentiate between ‘assign’ and ‘retain’ keyword.
What is block in ios swift?
What is bridging header in ios?
What’s the difference between not-running, inactive, active, background and suspended execution states?