What is the _root_ package in Scala?

Question

I\'m using IntelliJ IDEA with the Scala plugin. If I reference HashMap in code, and then use Alt-Enter to add the import, the package gets imported as:

_root         


        

Answer 1

The Scala language specification has this to say about _root_ in section 9.4 Package References

The special predefined name _root_ refers to the outermost root package which contains all top-level packages.

See the following PDF for the full language reference: http://www.scala-lang.org/docu/files/ScalaReference.pdf