Scala: Get index in map function

Question

I am starting in Scala and I want to get an index while I am iterating over a list using the map function.

For example, I have this line of code:

val x= list.flatMap(l => anotherFunction(l.param1.param2List.size * l.multiplier, l, l.param1.param2List(0)))

And I wanted to do something like this:

val x= list.flatMap(l => anotherFunction(l.param1.param2List.size * l.multiplier, l, l.param1.param2List(index)))

Is there any way to add a counter or something like that in order to get the index as if I was looping through the list in a for cycle? Is it possible or should I try another approach?

Possible duplicate of How can I use map and receive an index as well in Scala? — Tzach Zohar
– Tzach Zohar, Commented May 23, 2017 at 19:47
it is a duplicate: i.e stackoverflow.com/questions/20363754/… — Pavel
– Pavel, Commented May 23, 2017 at 19:51

Pavel · Accepted Answer · 2017-05-23 20:03:13Z

1

I am sure this is a duplicate, use something like:

val l = List(1, 2, 4)
val r = l.zipWithIndex

Please read api documentation on collections:

http://www.scala-lang.org/api/current/scala/collection/immutable/List.html

What exactly are you trying to achieve ?

edited May 23, 2017 at 20:03

answered May 23, 2017 at 19:48

Pavel

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