How can I use map and receive an index as well in Scala?

Question

Is there any List/Sequence built-in that behaves like map and provides the element\'s index as well?

Answer 1

Use .map in .zipWithIndex with Map data structure

val sampleMap = Map("a" -> "hello", "b" -> "world", "c" -> "again")

val result = sampleMap.zipWithIndex.map { case ((key, value), index) => 
    s"Key: $key - Value: $value with Index: $index"
}

Results

 List(
       Key: a - Value: hello with Index: 0, 
       Key: b - Value: world with Index: 1, 
       Key: c - Value: again with Index: 2
     )