pattern matching - Scala mutable collections and "Reference must be prefixed warnings" -

i have use mutable linked list specific use case. i'd avoid "reference must prefixed" warnings.

aliasing import seems solution:

import scala.collection.mutable.{linkedlist => mutablelinkedlist}

it works on cases except in pattern matching empty linkedlist, still produces warning:

case mutablelinkedlist() => //

the way can remove warning seems to qualified case check on empty list:

case scala.collection.mutable.linkedlist() => //

why first case not rid of warning?

just import mutable package:

import collection.mutable

and use mutable collection:

mutable.linkedlist(1, 2, 3)

or if prefer more concise variant:

import collection.{mutable => m} m.linkedlist(1, 2, 3)

it work pattern matching also.

Naan