Scala Iterator sum() method with example

The sum() method belongs to the concrete value members of the class AbstractIterator. It is defined in the classes TraversableOnce and GenTraversableOnce. It adds the elements of the stated collection.

• Method Definition:

  def sum: A

• Return Type:
  It returns the sum of all the elements in the stated iterator.

Example:

// Scala program of sum()
// method

// Creating object
object GfG
{

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

        // Declaring a iterator
        val iter = Iterator(2, 4, 5, 6)

        // Applying sum method
        val iter1 = iter.sum

        // Displays output
        println(iter1)

    }
}

Output:

17

Here, the sum of all the elements is printed.
Example:

// Scala program of sum()
// method

// Creating object
object GfG
{

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

        // Declaring a iterator
        val iter = Iterator(1.5, 2.3, 3.4)

        // Applying sum method
        val iter1 = iter.sum

        // Displays output
        println(iter1)

    }
}

Output:

7.199999999999999