Scala Iterator filter() method with example
The filter() method belongs to the concrete value members of the class AbstractIterator. It is defined in the classes Iterator and IterableOnceOps. It selects all the elements of the stated iterator which satisfies the used predicate.
Method Definition : def filter(p: (A) => Boolean): Iterator[A]
Return Type : It returns a new iterator containing all the elements of the stated iterator which satisfies the given predicate.
Example #1:
// Scala program of filter() // method // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating an Iterator val iter = Iterator( 7 , 8 , 5 , 4 , 13 ) // Applying filter method val x = iter.filter(x => {x % 2 == 0 }) // Applying next method val result = x.next() // Displays output println(result) } } |
Output:
8
Example #2:
// Scala program of filter() // method // Creating object object GfG { // Main method def main(args : Array[String]) { // Creating an Iterator val iter = Iterator( 3 , 9 , 5 , 1 , 13 ) // Applying filter method val x = iter.filter(x => {x % 3 ! = 0 }) // Applying next method val result = x.next() // Displays output println(result) } } |
Output:
5