Scala TreeSet diff() method with example

Last Updated : 21 Nov, 2019
The diff() method is used to find the difference between the two TreeSet. It deletes elements that are present in one TreeSet from the other one.
Method Definition: def diff[B >: A](that: collection.Seq[B]): TreeSet[A] Return Type: It returns a new TreeSet which consists of elements after the difference between the two given TreeSet.
Example #1: Scala
// Scala program of diff() 
// method 

// Import TreeSet
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSet
        val t1 = TreeSet(1, 2, 3, 4, 5)  
          
        val t2 = TreeSet(3, 4, 5)  
          
        // Print the TreeSet 
        println("TreeSet_1: " + t1) 
          
        println("TreeSet_2: " + t2) 
          
        // Applying diff method  
        val result = t1.diff(t2)  
          
        // Displays output  
        print("(TreeSet_1 - TreeSet_2): " + result) 
        
    } 
} 
Output:
TreeSet_1: TreeSet(1, 2, 3, 4, 5)
TreeSet_2: TreeSet(3, 4, 5)
(TreeSet_1 - TreeSet_2): TreeSet(1, 2)
Example #2: Scala
// Scala program of diff() 
// method 

// Import TreeSet
import scala.collection.mutable._

// Creating object 
object GfG 
{ 

    // Main method 
    def main(args:Array[String]) 
    { 
    
        // Creating TreeSet
        val t1 = TreeSet(1, 2, 3, 4, 5)  
          
        val t2 = TreeSet(3, 4, 5, 6, 7, 8)  
          
        // Print the TreeSet 
        println("TreeSet_1: " + t1) 
          
        println("TreeSet_2: " + t2) 
          
        // Applying diff method  
        val result = t2.diff(t1)  
          
        // Displays output  
        print("(TreeSet_2 - TreeSet_1): " + result) 
        
    } 
} 
Output:
TreeSet_1: TreeSet(1, 2, 3, 4, 5)
TreeSet_2: TreeSet(3, 4, 5, 6, 7, 8)
(TreeSet_2 - TreeSet_1): TreeSet(6, 7, 8)
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