foreach()方法用於將給定函數應用於集合中的所有元素。
函數定義: def foreach(f: (A) => Unit): Unit
返回類型: It returns all the elements of the set after applying the given function to each of them.
範例1:
// Scala program of foreach()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(3, 7, 12, 9, 21)
// Applying foreach method
s1.foreach(x => println(x))
}
}
輸出:
21 9 12 7 3
範例2:
// Scala program of foreach()
// method
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating a set
val s1 = Set(1, 2, 3, 4, 5)
// Applying foreach method
s1.foreach(x => println(x + " times " + x + " = " + x*x))
}
}
輸出:
5 times 5 = 25 1 times 1 = 1 2 times 2 = 4 3 times 3 = 9 4 times 4 = 16
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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 Set 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。