Working with tuples

Type the following in the Scala Console to get more familiar with tuples. Feel free to experiment with different types and sizes of tuples:

scala> val tuple3 = (1, "hello", 2.0)
tuple3: (Int, String, Double) = (1,hello,2.0)

scala> tuple3._1
res1: Int = 1

scala> tuple3._2
res2: String = hello

scala> val (a, b, c) = tuple3

a: Int = 1
b: String = hello
c: Double = 2.0

You can create tuples of any length up to 22, and access their elements using _1, _2, and so on. You can also declare several variables in one go for each element of the tuple.