Utility functions to ease working with parallel processes in elixir.

parallel.ex

defmodule Parallel do
  @moduledoc """
  Utility functions to ease working with parallel processes.
  """

  @doc """
  Equivalent to `Enum.map/2` but each `function` call is made inside its own
  process.
  """
  def map(enumerable, function) do
    enumerable
    |> Enum.map(&Task.async(fn -> function.(&1) end))
    |> Enum.map(&Task.await/1)
  end

  @doc """
  Run a list of functions in parallel and return their results in a
  list.
  """
  def run_tasks(tasks) do
    tasks
    |> Enum.map(&Task.async/1)
    |> Enum.map(&Task.await/1)
  end
end