This looks pretty straightforward but this normal variable question can create a hell lot of confusion during the interview.
Q: Can you set nil to a!
Q: If we set nil to a! then how would you decide between a! and a?
Q: How would you decide between a and a!
Q: Why storyboard outlets are Implicitly Unwrapped Optional?
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Difference between Optional and Implicitly Unwrapped Optional | Important Swift Interview Question! | NatokHD