[Solved] Given this Swift code, how can you safely print the length of the optional string text? var text: String? = "Hello" // Your code here | Swift

Swift - Optionals

Given this Swift code, how can you safely print the length of the optional string text?

var text: String? = "Hello"
// Your code here

Aprint(text ?? 0)

Bif let safeText = text { print(safeText.count) } else { print(0) }

Cprint(text!)

Dprint(text.count)

Step-by-Step Solution

Solution:

Step 1: Understand optional unwrapping with if let
Using if let safely unwraps the optional text only if it has a value, avoiding crashes.
Step 2: Use unwrapped value to get length
Inside the if let block, safeText.count gives the length. If text is nil, print 0.
Step 3: Check other options
print(text.count) tries to access count on optional directly (error). print(text!) force unwraps without check (unsafe). print(text ?? 0) uses nil coalescing but mismatches types.
Final Answer:
if let safeText = text { print(safeText.count) } else { print(0) } -> Option B
Quick Check:
Use if let to safely unwrap optionals [OK]

Quick Trick: Use if let to unwrap optionals safely [OK]

Common Mistakes:

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Given this Swift code, how can you safely print the length of the optional string text?