Scala Iterator concatenation with example

The concatenation of the Scala iterators is done by utilizing the operator ++. It belongs to the concrete value members of the class AbstractIterator. It is utilized to add the elements of the two iterators. It is defined in the class Iterator.

Method Definition : def ++(that: => Iterator[A]): Iterator[A] Return Type : It returns the concatenation of two iterators.

Example #1: Scala

// Scala program of concatenation
// method

// Creating object
object GfG
{ 

    // Main method
    def main(args:Array[String])
    {
    
        // Applying ++ operator
        val result = Iterator(2,4).++(Iterator(6,7))
        
        // Applying while loop
        while(result.hasNext)
        {
        
        // Displays output
        println(result.next())
    
        }
    }
}

Therefore, both the iterator's elements are added and here we have utilized hasNext and next methods, which can be called on an Iterator in Scala. Example #2: Scala

// Scala program of concatenation
// method

// Creating object
object GfG
{ 

    // Main method
    def main(args:Array[String])
    {
    
        // Applying ++ operator
        val result = Iterator(0).++(Iterator(1))
        
        // Applying while loop
        while(result.hasNext)
        {
        
        // Displays output
        println(result.next())
    
        }
    }
}