Elixir util / helper functions. Keywords: elixir, helpers, utils, elixir utils, elixir helpers.

elixir_utils_helper.md

Intro

Functions to help with common tasks on Elixir.

Utilities

• Elixir type protocol similar to Python.

What is Credo?

Credo is a tools to improve your cod, refactor, consistency, etc.

Why typeof show a CyclomaticComplexity warning?

When a function has >= 9 conditions (by default is 9) to accomplish a warning was shown.

In this function we have 9 conditions on our cond that is the reason. If you remove, for example, true -> nil the warning is removed.

This warning is showed because on Elixir this type of practice are...disgunting.

Source https://hexdocs.pm/credo/Credo.Check.Refactor.CyclomaticComplexity.html

Sources

• Variable type.
• Protocol.

elixir_utils_helpers_module.ex

defmodule Utils do
  @moduledoc """
  Utility functions for Elixir.
  """

  @doc """
  Returns a string with variable type name or nil if not found
  """
  @spec typeof(any()) :: String.t()
  def typeof(myterm) do
    cond do
      is_float(myterm) -> :float
      is_number(myterm) -> :number
      is_atom(myterm) -> :atom
      is_boolean(myterm) -> :boolean
      is_binary(myterm) -> :binary
      is_function(myterm) -> :function
      is_list(myterm) -> :list
      is_tuple(myterm) -> :tuple
      true -> nil
    end
  end
end