Scala list take with offset

Question

For example I have val source = List("1", "2", "3", "4", "5", "6", "7") and I need get 3 elements start with second element. expected List("2","3") or List("3","4"). Is there any methods or any data structure with this ability?

Answer 1

I think slice is exactly what you're looking for

scala> val source = List("1", "2", "3", "4", "5", "6", "7")
source: List[String] = List(1, 2, 3, 4, 5, 6, 7)

scala> source.slice(2, 4)
res0: List[String] = List(3, 4)

Answer 2

Use combinations of drop and take methods:

source.drop(2).take(3) // List(3, 4, 5)

• drop - skip first n elements
• take - grab n elements