You want to show a label with text "No messages" only when the messages array is empty. Which SwiftUI code correctly handles this empty state?

hard📝 Application Q15 of 15

iOS Swift - Lists and Data Display

You want to show a label with text "No messages" only when the messages array is empty. Which SwiftUI code correctly handles this empty state?

Aif messages.count > 0 { Text("No messages") } else { List(messages, id: \.self) { Text($0) } }

BList(messages, id: \.self) { Text($0) } always shows, no empty state

CText(messages.isEmpty ? "No messages" : "")

Dif messages.isEmpty { Text("No messages") } else { List(messages, id: \.self) { Text($0) } }

Step-by-Step Solution

Solution:

Step 1: Understand the requirement
Show "No messages" label only when messages array is empty, otherwise show the list.
Step 2: Evaluate options
if messages.isEmpty { Text("No messages") } else { List(messages, id: \.self) { Text($0) } } uses if messages.isEmpty to conditionally show the label or the list, which is correct.
Step 3: Check other options
if messages.count > 0 { Text("No messages") } else { List(messages, id: \.self) { Text($0) } } reverses the condition incorrectly. Text(messages.isEmpty ? "No messages" : "") shows empty text instead of list. List(messages, id: \.self) { Text($0) } always shows, no empty state never shows empty state.
Final Answer:
if messages.isEmpty { Text("No messages") } else { List(messages, id: \.self) { Text($0) } } -> Option D
Quick Check:
Use if isEmpty to toggle empty state UI [OK]

Quick Trick: Use if isEmpty to show empty state or data list [OK]

Common Mistakes:

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