Scala Iterator dropWhile() method with example
The dropWhile() method belongs to the concrete value members of the class Abstract Iterator. It is defined in the classes Iterator and IterableOnceOps. It drops the longest prefix of elements which satisfies the stated predicate.
Method Definition : def dropWhile(p: (A) => Boolean): Iterator[A]
Where, p is the predicate to be used.
Return Type : It returns the longest suffix of the stated iterator whose first element does not satisfies the used predicate.
Example #1:
// Scala program of dropWhile() // method // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating an Iterator val iter = Iterator(2, 3, 4, 6, 7) // Applying dropWhile method val x = iter.dropWhile(x => {x < 5}) // Applying next method val result = x.next() // Displays output println(result) } } |
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Output:
6
Example #2:
// Scala program of dropWhile() // method // Creating object object GfG { // Main method def main(args:Array[String]) { // Creating an Iterator val iter = Iterator(7, 3, 4, 6, 7) // Applying dropWhile method val x = iter.dropWhile(x => {x % 2 != 0}) // Applying next method val result = x.next() // Displays output println(result) } } |
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Output:
4
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