Convert a Scala list to a tuple?

Question

How can I convert a list with (say) 3 elements into a tuple of size 3?

For example, let's say I have val x = List(1, 2, 3) and I want to convert this into (1, 2, 3). How can I do this?

Answer 1

You can do it using scala extractors and pattern matching (link):

val x = List(1, 2, 3)  val t = x match {   case List(a, b, c) => (a, b, c) } 

Which returns a tuple

t: (Int, Int, Int) = (1,2,3) 

Also, you can use a wildcard operator if not sure about a size of the List

val t = x match {   case List(a, b, c, _*) => (a, b, c) }