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:

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

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