[Solved] What does the ?. operator do in Swift when used with optionals? — Ans: It safely accesses a property or method and returns nil if the optional is nil. | Swift

Swift - Optionals

What does the ?. operator do in Swift when used with optionals?

AIt forces unwraps the optional and crashes if nil.

BIt converts the optional to a non-optional value automatically.

CIt safely accesses a property or method and returns nil if the optional is nil.

DIt assigns a default value if the optional is nil.

Step-by-Step Solution

Solution:

Step 1: Understand optional chaining purpose
The ?. operator is used to safely access properties or methods on an optional value.
Step 2: Behavior when optional is nil
If the optional is nil, the chaining stops and returns nil instead of crashing.
Final Answer:
It safely accesses a property or method and returns nil if the optional is nil. -> Option C
Quick Check:
Optional chaining = safe access with nil return [OK]

Quick Trick: Remember: ? stops if nil, no crash happens [OK]

Common Mistakes:

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What does the ?. operator do in Swift when used with optionals?