Scala Queue +:() method with example

The +:() method is utilized to return a new queue with an element added at the front of the given queue.

Method Definition: def +:[B >: A](elem: B): Queue[B]

Return Type: It returns a new queue with an element added at the front of the given queue.

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("for", "geeks")

        // 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(2, 3, 4, 5, 6)

        // Applying +:() method
        val result = q1.+:(1)

        // Display output
        print(result)

    }
}

Output:

Queue(1, 2, 3, 4, 5, 6)