Elixir first module

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import IEx.Helpers

IEx.Helpers

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defmodule Conversions.Metric do
  def cents_to_inches(cents \\ pi()) do
    cents * 2.54
  end

  defp pi do
    3.1415
  end
end

{:module, Conversions.Metric, <<70, 79, 82, 49, 0, 0, 7, ...>>, {:pi, 0}}

i(Conversions.Metric)

Term
  Conversions.Metric
Data type
  Atom
Module bytecode
  []
Source
  #cell:gq4oqlq6exmutsspbjryalmq4mdrf4tw
Version
  [198863129467447789547019270714092649129]
Compile options
  [:no_spawn_compiler_process, :from_core, :no_core_prepare, :no_auto_import]
Description
  Call Conversions.Metric.module_info() to access metadata.
Raw representation
  :"Elixir.Conversions.Metric"
Reference modules
  Module, Atom
Implemented protocols
  IEx.Info, Inspect, List.Chars, String.Chars

Conversions.Metric.cents_to_inches()

7.979410000000001

Conversions.Metric.cents_to_inches(2)

5.08

exports(Conversions.Metric)

cents_to_inches/0     cents_to_inches/1     

# the name will become `Metric`.
# name after the last period become alias
# the last namespace is Metric 
alias Conversions.Metric

# alias Conversions.Metric, as: Metric

Conversions.Metric

Metric.cents_to_inches()

7.979410000000001

# decide not to type at all
import Conversions.Metric

Conversions.Metric

cents_to_inches()

7.979410000000001