Scala immutable TreeSet exists() method with example

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