How can you safely unwrap multiple optionals using if let in Swift? Choose the correct code snippet.

hard📝 Application Q9 of 15

Swift - Optionals

How can you safely unwrap multiple optionals using if let in Swift? Choose the correct code snippet.

Aif let a = optionalA or let b = optionalB { print(a, b) }

Bif let a = optionalA, let b = optionalB { print(a, b) }

Cif let a = optionalA; let b = optionalB { print(a, b) }

Dif let a = optionalA && let b = optionalB { print(a, b) }

Step-by-Step Solution

Solution:

Step 1: Understand multiple optional binding syntax
Swift allows chaining multiple let bindings separated by commas.
Step 2: Identify correct syntax
if let a = optionalA, let b = optionalB { print(a, b) } correctly uses commas to unwrap both optionals safely.
Final Answer:
if let a = optionalA, let b = optionalB { print(a, b) } -> Option B
Quick Check:
Multiple optional binding uses commas [OK]

Quick Trick: Use commas to unwrap multiple optionals in one if let [OK]

Common Mistakes:

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