[Solved] Which of these is a valid use of guard in a Swift function? — Ans: guard let name = optionalName else { return } | Swift

Swift - Control Flow

Which of these is a valid use of guard in a Swift function?

Aguard optionalName = name else { return }

Bguard let name = optionalName else { return }

Cguard let name optionalName else { return }

Dguard let name == optionalName else { return }

Step-by-Step Solution

Solution:

Step 1: Check correct syntax for optional binding with guard
The correct syntax is guard let variable = optionalValue else { ... }.
Step 2: Identify the valid option
guard let name = optionalName else { return } matches the correct syntax. Other options have assignment or comparison errors.
Final Answer:
guard let name = optionalName else { return } -> Option B
Quick Check:
Guard optional binding syntax = guard let name = optionalName else { return } [OK]

Quick Trick: Use 'guard let var = optional else' for safe unwrapping [OK]

Common Mistakes:

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Which of these is a valid use of guard in a Swift function?