import util.ordering
native scala.collection.mutable.PriorityQueue

data Task( priority, description )

def comparator( Task(a, _), Task(b, _) )
  | a > b     = -1
  | a < b     =  1
  | otherwise =  0

q = PriorityQueue( ordering(comparator) )

q.enqueue(
  Task(3, 'Clear drains'),
  Task(4, 'Feed cat'),
  Task(5, 'Make tea'),
  Task(1, 'Solve RC tasks'),
  Task(2, 'Tax return')
  )

while not q.isEmpty()
  println( q.dequeue() )