How to sum a list of tuples

Question

Given the following list of tuples...

val list = List((1, 2), (1, 2), (1, 2))

... how do I sum all the values and obtain a single tuple lik

Answer 1

Scalaz solution (suggestied by Travis and for some reason a deleted answer):

import scalaz._
import Scalaz._

val list = List((1, 2), (1, 2), (1, 2))
list.suml

which outputs

res0: (Int, Int) = (3,6)