fold list of tuples in scala with destructuring

Question

scala> val l = List((1,2), (2,3))
l: List[(Int, Int)] = List((1,2), (2,3))

I can do

scala>  (0 /: l) {(a, i) => i._1 + a}
         


        

Answer 1

Give this a try:

(0 /: l) { case (a, (b, c)) => b + a }