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Scala Queue foreach() method with example
  • Last Updated : 24 Oct, 2019

The foreach() method is utilized to apply a given function to all the elements of the queue.

Method Definition: def foreach[U](f: (A) => U): Unit

Return Type: It returns all the elements of the queue after applying the given function to each of them.

Example #1:

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// Scala program of foreach() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating queues 
        val q1 = Queue(1, 3, 2, 7, 6, 5
         
        // Applying foreach method to print the queue
        print("Elements in the queue: ")
        q1.foreach(x => print(x + " ")) 
          
    

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Output:

Elements in the queue: 1 3 2 7 6 5

Example #2:

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// Scala program of foreach() 
// method 
  
// Import Queue  
import scala.collection.mutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating queues 
        val q1 = Queue(1, 3, 2, 7, 6, 5
          
        // Print the queue
        println(q1)
          
        // Applying foreach method 
        q1.foreach(x => println(x + " times " + x +" = " + x*x)) 
          
    

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Output:

Queue(1, 3, 2, 7, 6, 5)
1 times 1 = 1
3 times 3 = 9
2 times 2 = 4
7 times 7 = 49
6 times 6 = 36
5 times 5 = 25



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