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