Is there a way to iterate over a set?

[rishavs]

or perhaps to convert a set to a sequence?

I am looking to randomly take out a member of a set but hitting a wall here.

Something like 
    
    
    var availableDoors  : set[Directions] = {North, East, South, West}
    # nextDoor = availableDoors[rand(availableDoors.len)]
    
    
    Run