is-this-normal.jl

# I have the following sauce code:
import Iterators

type MinimaxNode
  id :: Int
  min_node :: Bool
  val :: Nullable{Int}
  children :: Vector{MinimaxNode}
end

current_id = 0

function mk_minimax(d :: Int, branch :: Range{Int}, vrange :: Range{Int}, mini :: Bool)        
  local val :: Nullable{Int}
  local children :: Vector{MinimaxNode}
  global current_id = current_id + 1
  if d == 0
    val = Nullable{Int}(rand(vrange))
    children = MinimaxNode[]
    else
    val = Nullable{Int}()
    children = collect(Iterators.repeatedly(() -> mk_minimax(d - 1, branch, vrange, !mini), rand(branch)))
    end
  return MinimaxNode(current_id, mini, val, children)
end

# However, when I do the following (after `include`ing):
#
# julia> x = mk_minimax(2, 2:3, -10:10, true)
#
# I get:
# MinimaxNode(8,true,Nullable{Int64}(),MinimaxNode[MinimaxNode(5,false,#NULL,MinimaxNode[MinimaxNode(3,true,-4,MinimaxNode[])
# ,MinimaxNode(4,true,10,MinimaxNode[]),MinimaxNode(5,true,-2,MinimaxNode[])]),MinimaxNode(8,false,#NULL,MinimaxN
# ode[MinimaxNode(7,true,7,MinimaxNode[]),MinimaxNode(8,true,-2,MinimaxNode[])])])
#
# Are those #NULLs normal, and if they're not, why am I getting them here?