List and Tuples in Scala

Question

From the book \'Programming in Scala\' by Martin Odersky:

Another useful container object is the tuple. Like lists, tuples are immutable, but unlike lis

Answer 1

A very simple demonstration of what the other answers are telling you.

val tuplX = (10, "ten")      //tuplX: (Int, String) = (10,ten)
val listX = List(10, "ten")  //listX: List[Any] = List(10, ten)

tuplX._1 - 6     //res0: Int = 4
tuplX._2.length  //res1: Int = 3

listX(0) - 6     //Error: value - is not a member of Any
listX(1).length  //Error: value length is not a member of Any