foreach()方法用於將給定函數應用於隊列的所有元素。
函數定義: def foreach[U](f: (A) => U): Unit
返回類型: It returns all the elements of the queue after applying the given function to each of them.
範例1:
// Scala program of foreach()
// method
// Import Queue
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating queues
val q1 = Queue(1, 3, 2, 7, 6, 5)
// Applying foreach method to print the queue
print("Elements in the queue: ")
q1.foreach(x => print(x + " "))
}
}
輸出:
Elements in the queue: 1 3 2 7 6 5
範例2:
// Scala program of foreach()
// method
// Import Queue
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating queues
val q1 = Queue(1, 3, 2, 7, 6, 5)
// Print the queue
println(q1)
// Applying foreach method
q1.foreach(x => println(x + " times " + x +" = " + x*x))
}
}
輸出:
Queue(1, 3, 2, 7, 6, 5) 1 times 1 = 1 3 times 3 = 9 2 times 2 = 4 7 times 7 = 49 6 times 6 = 36 5 times 5 = 25
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注:本文由純淨天空篩選整理自rupesh_rao大神的英文原創作品 Scala Queue foreach() method with example。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。