Which Swift code snippet correctly iterates over an array values using enumerated() to access both index and element?

easy📝 Conceptual Q2 of 15

Swift - Collections

Which Swift code snippet correctly iterates over an array values using enumerated() to access both index and element?

Afor idx, val in values.enumerated { print(idx, val) }

Bfor (idx, val) in values.enumerated() { print(idx, val) }

Cfor idx in values.enumerated() { print(idx) }

Dfor val in values.enumerated() { print(val) }

Step-by-Step Solution

Solution:

Step 1: Check syntax of enumerated()
The method enumerated() must be called with parentheses.
Step 2: Check tuple unpacking
for (idx, val) in values.enumerated() { print(idx, val) } correctly uses tuple unpacking with parentheses: (idx, val).
Step 3: Analyze other options
for idx, val in values.enumerated { print(idx, val) } misses parentheses after enumerated. Options C and D do not unpack the tuple correctly.
Final Answer:
A -> Option B
Quick Check:
Use parentheses with enumerated() and tuple unpacking [OK]

Quick Trick: Use for (index, element) in array.enumerated() [OK]

Common Mistakes:

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