In Scala, how to get a slice of a list from nth element to the end of the list without knowing the length?

Question

I\'m looking for an elegant way to get a slice of a list from element n onwards without having to specify the length of the list. Lets say we have a multiline string which I spl

Answer 1

Just drop first n elements you don't need:

List(1,2,3,4).drop(2)
res0: List[Int] = List(3, 4)

or in your case:

string.split("\n").drop(2)

There is also paired method .take(n) that do the opposite thing, you can think of it as .slice(0,n).

In case you need both parts, use .splitAt:

val (left, right) = List(1,2,3,4).splitAt(2)
left: List[Int] = List(1, 2)
right: List[Int] = List(3, 4)

Answer 2

You can use scala's list method 'takeRight',This will not throw exception when List's length is not enough, Like this:

val t = List(1,2,3,4,5);
t.takeRight(3);
res1: List[Int] = List(3,4,5)

If list is not longer than you want take, this will not throw Exception:

val t = List(4,5);
t.takeRight(3);
res1: List[Int] = List(4,5)

Answer 3

get last 2 elements:

List(1,2,3,4,5).reverseIterator.take(2)

Answer 4

The right answer is takeRight(n):

"communism is sharing => resource saver".takeRight(3)
                                              //> res0: String = ver