foreach()方法用于将给定函数应用于集合中的所有元素。
函数定义: def foreach(f: (A) => Unit): Unit
返回类型: It returns all the elements of the set after applying the given function to each of them.
范例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))
}
}
输出:
21 9 12 7 3
范例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))
}
}
输出:
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:本文由纯净天空筛选整理自rupesh_rao大神的英文原创作品 Scala Set foreach() method with example。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。