在 Scala Stack class
,則forall()方法用於檢查謂詞是否對堆棧的所有元素都成立。
函數定義: def forall(p: (A) => Boolean): Boolean
返回類型: It returns true if the predicate holds true for all the elements of the stack or else returns false.
範例1:
// Scala program of forall()
// method
// Import Stack
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating stack
val s1 = Stack(6, 2, 3, 4, 5)
// Print the stack
println(s1)
// Applying forall method
val result = s1.forall(x => {x % 7 == 0})
// Display output
println("All the elements are divisible by 7: " + result)
}
}
輸出:
Stack(6, 2, 3, 4, 5) All the elements are divisible by 7: false
範例2:
// Scala program of forall()
// method
// Import Stack
import scala.collection.mutable._
// Creating object
object GfG
{
// Main method
def main(args:Array[String])
{
// Creating stack
val s1 = Stack(7, 9, 3, 1, 5)
// Print the stack
println(s1)
// Applying forall method
val result = s1.forall(x => {x % 2 == 1})
// Display output
println("All the elements are odd: " + result)
}
}
輸出:
Stack(7, 9, 3, 1, 5) All the elements are odd: true
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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 Stack forall() 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。