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Scala immutable TreeSet exists() method with example

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  • Last Updated : 19 Apr, 2020
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In Scala immutable TreeSet class, the exists() method is utilised to check whether a predicate holds for any of the elements of the TreeSet.

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

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

Example #1:




// Scala program of exists() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5
          
        // Print the TreeSet
        println(t1
          
        // Applying exists() method  
        val result = t1.exists(x => {x % 7 == 0})
          
        // Displays output 
        println("Element divisible by 7 exists: " + result)
          
    

Output:

TreeSet(1, 2, 3, 5, 6, 7)
Element divisible by 7 exists: true

Example #2:




// Scala program of exists() 
// method 
  
// Import TreeSet
import scala.collection.immutable._
  
// Creating object 
object GfG 
  
    // Main method 
    def main(args:Array[String]) 
    
      
        // Creating TreeSet
        val t1 = TreeSet(1, 3, 2, 7, 6, 5
          
        // Print the TreeSet
        println(t1
          
        // Applying exists() method  
        val result = t1.exists(x => {x == 10})
          
        // Displays output 
        println("Element 10 exists: " + result)
          
    

Output:

TreeSet(1, 2, 3, 5, 6, 7)
Element 10 exists: false

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