defmodule TestCode do
    def hello() do
        a = [foo: "bar", hello: "world", hello: "test"]
        m = %{:foo => "hoge", "hoge" => "bar"}
        IO.inspect a
        IO.inspect m[m.foo]
        m2 = %{m | :foo => "hhhh"}
        IO.inspect m.foo
        IO.inspect m2.foo

        enum_functions = Enum.__info__(:functions)
        IO.inspect(enum_functions)
        Enum.__info__(:functions) |> Enum.each(fn({function, arity}) -> IO.puts "#{function}/#{arity}" end)
    end
end

TestCode.hello()