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A dependency-free utility library containing 100+ useful functions.

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moar lib uuid.ex
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lib/uuid.ex 

defmodule Moar.UUID do

  # @related [test](test/uuid_test.exs)



  @moduledoc "UUID-related functions"



  @uuid_regex ~r/[0-9a-f]{2}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}/i



  @doc "Returns a regex that will match a UUID"

  @spec regex() :: Regex.t()

  def regex, do: @uuid_regex



  @doc """

  Returns `true` if the argument is a valid UUID, or `false` if it is nil or an invalid UUID.



  ```elixir

  iex> Moar.UUID.valid?(nil)

  false



  iex> Moar.UUID.valid?("cows")

  false



  iex> Moar.UUID.valid?("a3357225-ed23-48b6-9ce5-10a580489b3f")

  true

  ```

  """

  @spec valid?(nil | binary()) :: boolean()

  def valid?(nil), do: false

  def valid?(uuid), do: Regex.match?(@uuid_regex, uuid)

end