Open In App
Related Articles

Scala Stack forall() method with example

Improve
Improve
Improve
Like Article
Like
Save Article
Save
Report issue
Report
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


Last Updated : 03 Nov, 2019
Like Article
Save Article
Previous
Next
Share your thoughts in the comments
Similar Reads