Having an issue similar to https://forum.elixirforum.net/t/whats-the-best-way-to-access-and-retrieve-data-from-deeply-nested-maps-and-lists/613/4.

I have a data structure with a nested map I’d like to accumulate into a list. The problem is I don’t know how to recursively get the maps of nested elements.
Here is a contrived version. I’m trying to get a list of all the c and nested c values. Is there a way to do this?

test "Recursive Maps" do
    #I just want all the c's in a list
    rMap = %{:a => 1, :b => 2, :c => %{ :a => 111, :b => 2222, 
        :c => %{ :a => 212, :b => 323, 
            :c => %{:a => 45, :b => 524, 
                :c => %{}}}}}

    rMap2 = %{:a => 3, :b => 4, 
        :c => %{ :a => 5, :b => 6, 
            :c => %{ :a => 7, :b => 8, 
                :c => %{:a => 9, :b => 10, 
                    :c => %{a: 11, b: 12, c: 13}}}}}
                    
    rMaps = [rMap,rMap2]
    IO.puts "rMaps List of Justcs"
    IO.inspect rMaps
    justCs = justc rMaps
    IO.inspect justCs
    
    justCs = justc3 rMaps
    IO.inspect justCs

end
# Loop through list
def justc3(rMaps) do
    Enum.reduce_while(rMaps, [], fn rMap, acc ->
        if Map.has_key?(rMap,:c) == false do
            {:halt, acc}
        else
            c = Map.get(rMap,:c)
            {:cont, [c] ++ acc} 
        end
    end)
end

def justc(rMaps) do
    justCs = for rMap <- rMaps do
        c = Map.get(rMap,:c)
      #  IO.inspect Enum.count(c)
        if Enum.count(c) == 0 do
            []
        else
            Map.get(rMap,:c) 
        end
    end
end