Scala Stack foreach() method with example

Scala Stack forall() method with example

Last Updated : 03 Nov, 2019

In Scala Stack class, the forall() method is utilized to check if a predicate holds true for all the elements of the stack.

Method Definition: def forall(p: (A) => Boolean): Boolean

Return Type: It returns true if the predicate holds true for all the elements of the stack or else returns false.

Example #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) 
    }  
}  

Output:

Stack(6, 2, 3, 4, 5)
All the elements are divisible by 7: false

Example #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) 
    }  
}  

Output:

Stack(7, 9, 3, 1, 5)
All the elements are odd: true

Scala Stack foreach() method with example

rupesh_rao

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