Open In App

Scala Iterator dropWhile() method with example

Last Updated : 30 Jun, 2019
Improve
Improve
Like Article
Like
Save
Share
Report

The dropWhile() method belongs to the concrete value members of the class Abstract Iterator. It is defined in the classes Iterator and IterableOnceOps. It drops the longest prefix of elements which satisfies the stated predicate.

Method Definition : def dropWhile(p: (A) => Boolean): Iterator[A]

Where, p is the predicate to be used.

Return Type : It returns the longest suffix of the stated iterator whose first element does not satisfies the used predicate.

Example #1:




// Scala program of dropWhile()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating an Iterator 
        val iter = Iterator(2, 3, 4, 6, 7)
          
        // Applying dropWhile method
        val x = iter.dropWhile(x => {x < 5})
          
        // Applying next method
        val result = x.next()
          
        // Displays output
        println(result)
    }
}


Output:

6

Example #2:




// Scala program of dropWhile()
// method
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating an Iterator 
        val iter = Iterator(7, 3, 4, 6, 7)
          
        // Applying dropWhile method
        val x = iter.dropWhile(x => {x % 2 != 0})
          
        // Applying next method
        val result = x.next()
          
        // Displays output
        println(result)
      
    }
}


Output:

4


Like Article
Suggest improvement
Previous
Next
Share your thoughts in the comments

Similar Reads