elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

IO.inspect {:ok, agent} = Agent.start_link fn -> [] end
IO.inspect Agent.update(agent, fn list -> ["eggs"|list] end)
IO.inspect Agent.get(agent, fn list -> list end)
IO.inspect Agent.stop(agent)

elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

defmodule Crutches.Map do
  def deep_key_change(map, fun), do: deep_key_change(map, fun, %{})
  def deep_key_change(map, _, acc) when map == %{}, do: acc
  def deep_key_change(map, fun, acc) do
    map
    |> Enum.reduce acc, fn(submap, akk) ->
      case submap do
        {key, value} when is_map(value) -> 
          Map.put(akk, fun.(key), deep_key_change(value, fun, %{}))
        {key, value} ->

elixirplayground

defmodule Crutches.Map do
  def deep_key_change(map, fun), do: deep_key_change(map, fun, %{})
  def deep_key_change(map, _fun, acc) when map == %{}, do: acc
  def deep_key_change(map,  fun, acc) do
    map
    |> Enum.reduce acc, fn(submap, akk) ->
      case submap do
        {key, value} when is_map(value) -> 
          Map.put(akk, fun.(key), deep_key_change(value, fun, %{}))
        {key, value} ->

elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

defmodule MyModule do
  def hello do
    "Hello, World!"
  end
end

IO.puts(MyModule.hello)

elixirplayground

IO.puts "Hi!"