带有示例的 Scala Queue +=:() 方法
+=:()方法用于在队列的前面添加一个元素。
Method Definition: def +=:(elem: A): Queue.this.type
Return Type: It returns the given queue with an element added at its front.
示例 #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)
}
}
输出:
Queue(geeks, for, geeks)
示例 #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)
// Applying +=:() method
val result = q1.+=:(1)
// Display output
print(result)
}
}
输出:
Queue(1, 2, 3, 4, 5)