How to get the first element of List in Scala
In Scala, list is defined under scala.collection.immutable package. A list is a collection of same type elements which contains immutable data. Let’s see how to get the first element of given List in Scala.
List in Scala contains many suitable methods to perform simple operations like head(), tail(), isEmpty(). Coming to list, head() method is used to get the head/top element of the list.
below are examples to get first element of list.
Example :
scala
// Scala program to print immutable listsimport scala.collection.immutable._// Creating objectobject GFG{ // Main method def main(args:Array[String]) { // Creating and initializing immutable lists val mylist: List[String] = List("Geeks", "For", "geeks", "is", "a", "fabulous", "portal") println("The head of the list is:") println(mylist.head) }} |
Output:
The head of the list is: Geeks
Example :
scala
// Scala program to creating a uniform listimport scala.collection.immutable._// Creating objectobject GFG{ // Main method def main(args:Array[String]) { // Repeats Scala three times. val myList = List.range(10, 19) println(myList) println("First element is: " + myList.head) }} |
Output:
List(10, 11, 12, 13, 14, 15, 16, 17, 18) First element is: 10
