Scala Stack :() method with example
In Scala, scala.collection.mutable implements Stack data structure. The :\ method applies a binary operator to a start value and all elements of this traversable or iterator, going right to left.
Method Definition – def :\[B](z: B)(op: (A, B) ? B): B
Returns – the result of inserting op between consecutive elements of this traversable or iterator.
Example #1:
// Scala program of mutable stack :\() // method // Import Stack import scala.collection.mutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { val st 1 = Stack( 1 , 2 , 3 ) // Applying :\() method val result 1 = (st 1 : \ 16 )( _ + _ ) val result 2 = (st 1 : \ 16 )( _ - _ ) // Display output print(result 1 ) print( "\n" ) print(result 2 ) } } |
Output:
22 -14
Example #2:
// Scala program of mutable stack :\() method // Import Stack import scala.collection.mutable. _ // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating a stack val q 2 = List( 11 , 12 , 13 , 14 , 15 ) // Applying :\() method val result = (q 2 : \ 6 )( _ + _ ) // Display output print(result) } } |
Output:
71