Scala Iterator concatenation with example
Last Updated :
30 Jun, 2019
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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 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()) } } } |
Output:
2 4 6 7
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 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()) } } } |
Output:
0 1
