What is difference between weak and strong in ios?
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What is @synthesize in objective-c ?
What are the features is ios 12.1?
Can apk files run on ios?
Tell about block and GCD
If any app can run in the background, what about battery life?
What manual memory management ? How it work?
What is ios appdelegate?
Difference between sax parser and dom parser ?
What is a singleton?
What are the viewcontroller lifecycle in ios?
Explain interfaces?
What is nspersistentstore? Is it thread safe?