iOS interview questions reported at Flipkart

2 questions candidates reported being asked at Flipkart. Anonymous and unverified, so treat it as a hint of what to expect.

They cover Swift language, Memory, ARC & runtime. Every question below links to a full answer with the common traps and the follow-ups an interviewer is likely to ask, so you can practise the way the interview goes: answer first, then defend it.

1. What is copy-on-write? Which types use it? 1.1.7
2. What is the difference between strong, weak, unowned and unowned(unsafe)? 3.2.1