[Solved] Which of the following is the correct syntax for multiple optional binding in Swift?if let a = optionalA, let b = optionalB { // code } | Swift

Swift - Optionals

Which of the following is the correct syntax for multiple optional binding in Swift?

if let a = optionalA, let b = optionalB {
    // code
}

Aif let a = optionalA, let b = optionalB { }

Bif let a = optionalA; let b = optionalB { }

Cif let a = optionalA && let b = optionalB { }

Dif let a = optionalA or let b = optionalB { }

Step-by-Step Solution

Solution:

Step 1: Recall correct separator for multiple bindings
In Swift, multiple optional bindings in an if let statement are separated by commas.
Step 2: Check each option's syntax
if let a = optionalA, let b = optionalB { } uses commas correctly; others use invalid separators like semicolon, &&, or or.
Final Answer:
if let a = optionalA, let b = optionalB { } -> Option A
Quick Check:
Use commas to separate bindings [OK]

Quick Trick: Use commas, not semicolons or &&, between bindings [OK]

Common Mistakes:

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Which of the following is the correct syntax for multiple optional binding in Swift?