scala: How to pass an expanded list as varargs into a method?

Question

When creating a Map in scala, I call Map(entities.map{e => e.id -> e}), and I get:

found   : scala.collection.mutable.Indexed         


        

Answer 1

Try this: Map(entities.map{e => e.id -> e}:_*)

Explicitly typing it as a varargs using :_* seems to work.

Answer 2

Or this should work too:

entities.map{e => e.id -> e} toMap