I have two lists, I want to sum each element in list A with the element in list B, producing a new list.
I can do it with:
List(1,2).zip(List(5,5)).map(t => t._1 + t._2)
Is there any simpler or neater way to do this in Scala?
In Clojure I can just do:
(map + [1 2 3] [4 5 6])
For two lists:
(List(1,2), List(5,5)).zipped.map(_ + _)
For three lists:
(List(1,2), List(5,5), List(9, 4)).zipped.map(_ + _ + _)
For n lists:
List(List(1, 2), List(5, 5), List(9, 4), List(6, 3)).transpose.map(_.sum)
missingfaktor's answer is what I would have recommended, too.
But you could even improve your snippet to get rid of using the clumsy _1, _2:
List(1,2) zip List(5,5) map { case (a, b) => a + b }
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