Scala Queue +=() method with example

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

Method Definition: def +=(elem: A): Queue.this.type

Return Type: It returns the given queue with an element added at its back.

Example #1:

// 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("geeks", "for")

        // Applying +=() method
        val result = q1.+=("geeks")

        // Display output
        print(result)

    }
}

Output:

Queue(geeks, for, geeks)

Example #2:

// 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(1, 2, 3, 4)

        // Applying +=() method
        val result = q1.+=(5)

        // Display output
        print(result)

    }
}

Output:

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