Scala Queue ++=() method with example

Scala Queue ++=() method with example

Last Updated : 18 Oct, 2019

The ++=() method is utilized to add element of a queue at the back of another queue.

Method Definition: def ++=(xs: IterableOnce[A]): Queue.this.type Return Type: It returns the given queue with elements of another queue added at its end.

Example #1:

Scala

// Scala program of ++=() 
// method 

// Import Queue  
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a queue 
        val q1 = Queue(3, 4, 5) 
        
        val q2 = Queue(1, 2) 
        
        // Applying ++=() method 
        q2.++=(q1) 
            
        // Display output
        print(q2)   
        
    } 
}

Output:

Queue(1, 2, 3, 4, 5)

Example #2:

Scala

// Scala program of ++=() 
// method 

// Import Queue  
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
        // Creating a queue 
        val q1 = Queue("for", "geeks") 
        
        val q2 = Queue("geeks") 
        
        // Applying ++=() method 
        q2.++=(q1) 
            
        // Display output
        print(q2)   
        
    } 
}

Output:

Queue(geeks, for, geeks)

Scala Queue ++=() method with example

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