Behaviour.Reflection

Get all modules implementing an Elixir behaviour.

Installation

The Hex package can be installed as usual, by adding behaviour_reflection to your list of dependencies in mix.exs:

def deps do
  [
    {:behaviour_reflection, "~> 0.1"}
  ]
end

Usage

Let’s say you have a behaviour and a number of modules implementing it:

defmodule MyBehaviour do
  @callback fun :: String.t
end

defmodule Foo do
  @behaviour MyBehaviour
  def fun(), do: "foo"
end

defmodule Bar do
  @behaviour MyBehaviour
  def fun(), do: "bar"
end

At runtime you can retrieve all modules implementing the behaviour like this:

iex> Behaviour.Reflection.impls(MyBehaviour)
[Foo, Bar]

Documentation can be found at https://hexdocs.pm/behaviour_reflection.