[Solved] What is the issue with this Kotlin code snippet?val letters = listOf("x", "y", "z") for (i, letter in letters.withIndex()) { println("$i: $letter") } | Kotlin

Kotlin - Loops and Ranges

What is the issue with this Kotlin code snippet?

val letters = listOf("x", "y", "z")
for (i, letter in letters.withIndex()) {
  println("$i: $letter")
}

AThe list should be converted to an array before using withIndex()

BThe loop variable should be destructured using parentheses: (i, letter)

CwithIndex() cannot be used with lists

DThe println statement syntax is incorrect

Step-by-Step Solution

Solution:

Step 1: Analyze loop variable syntax
In Kotlin, when destructuring a pair or IndexedValue in a for loop, parentheses are required around the variables.
Step 2: Identify the error
The code uses for (i, letter in ...) instead of for ((i, letter) in ...), which causes a syntax error.
Final Answer:
The loop variable should be destructured using parentheses: (i, letter) -> Option B
Quick Check:
Destructuring requires parentheses [OK]

Quick Trick: Destructure pairs with parentheses in for loops [OK]

Common Mistakes:

MISTAKES

Master "Loops and Ranges" in Kotlin

9 interactive learning modes - each teaches the same concept differently

More Kotlin Quizzes

What is the issue with this Kotlin code snippet?