[Solved] What will be the output of this Swift code?let capitals = ["France": "Paris", "Japan": "Tokyo"] print(capitals["Japan"] ?? "Unknown") | Swift

Swift - Collections

What will be the output of this Swift code?

let capitals = ["France": "Paris", "Japan": "Tokyo"]
print(capitals["Japan"] ?? "Unknown")

AUnknown

BJapan

Cnil

DTokyo

Step-by-Step Solution

Solution:

Step 1: Access value for key "Japan"
The dictionary has "Japan" as a key with value "Tokyo".
Step 2: Use nil-coalescing operator
Since the key exists, capitals["Japan"] returns "Tokyo", so "Unknown" is ignored.
Final Answer:
Tokyo -> Option D
Quick Check:
Dictionary access returns value or default [OK]

Quick Trick: Use ?? to provide default if key missing [OK]

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