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 q 1 = Queue( "for" , "geeks" )
// Applying +:() method
val result = q 1 .+ : ( "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 q 1 = Queue( 2 , 3 , 4 , 5 , 6 )
// Applying +:() method
val result = q 1 .+ : ( 1 )
// Display output
print(result)
}
} |
Output:
Queue(1, 2, 3, 4, 5, 6)