What is the difference between synchronous & asynchronous task ?
What is @implementation?
Flow of push notification?
What is a memory leak in ios?
What is the mean of not running state in ios?
How to shut off message alerts in ios?
Explain ~/documents, ~/library, ~/tmp. What directory is ~ on ios?
What is dynamic dispatch ios?
What is ios design?
Explain how to shut off message alerts in ios?
What is suspended state in ios?
What are design patterns in ios?
Why do you generally create a weak reference when using self in a block?