[Solved] What will be printed by this Swift code?let first: String? = "Hello" let second: String? = nil if let a = first, let b = second { print(a + b) } else { print("Missing value") } | Swift

Swift - Optionals

What will be printed by this Swift code?

let first: String? = "Hello"
let second: String? = nil
if let a = first, let b = second {
    print(a + b)
} else {
    print("Missing value")
}

AMissing value

BHello

CHellonil

DCompile error

Step-by-Step Solution

Solution:

Step 1: Check optional values
first is "Hello", second is nil.
Step 2: Multiple optional binding fails
Since second is nil, the if condition fails and else block runs.
Final Answer:
Missing value -> Option A
Quick Check:
Nil optional causes else block [OK]

Quick Trick: If any optional is nil, else runs [OK]

Common Mistakes:

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