Scala Iterator hasDefiniteSize() method with example

The hasDefiniteSize() method is a concrete value member of AbstractMap class. It checks whether the stated traversable collection is having a finite size or not.

• Method Definition:

  def hasDefiniteSize: Boolean
  

• Return Type:
  It returns true if the stated collection has finite size else returns false or if the iterator is empty it returns true otherwise returns false.

Example :

// Scala program of hasDefiniteSize()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Declaring an empty iterator
        val iter = Iterator()

        // Applying hasDefiniteSize method
        val result = iter.hasDefiniteSize

        // Displays output
        println(result)

    }
}

Output:

true

Here, the iterator is empty so, the hasDefiniteSize method returns true.
Example :

// Scala program of hasDefiniteSize()
// method

// Creating object
object GfG
{

    // Main method
    def main(args:Array[String])
    {

        // Declaring an iterator
        val iter = Iterator(2, 3, 4, 9, 6)

        // Applying hasDefiniteSize method
        val result = iter.hasDefiniteSize

        // Displays output
        println(result)

    }
}

Output:

false

Here, the stated iterator is non-empty so, the method hasDefiniteSize returns false.