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Behaviours in Elixir
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== Overview == A behaviour is defined using the `@behaviour` attribute, followed by the name of the behaviour. The behaviour can then be used by modules that want to implement its functions. === Example === ```elixir defmodule Stack do @behaviour StackBehaviour # ... implementation ... end defmodule StackBehaviour do @callback push(any(), any()) :: any() @callback pop(any()) :: any() end ``` === Implementing a Behaviour === To implement a behaviour, a module must define all the functions specified by the behaviour. This ensures that the module adheres to the behaviour's contract. === Example === ```elixir defmodule ListStack do @behaviour StackBehaviour def push(stack, element) do # ... implementation ... end def pop(stack) do # ... implementation ... end end ``` === Enforcing Behaviour Conformance === Elixir provides a way to enforce that a module adheres to a specific behaviour. This can be done by using the `@required_callbacks` module attribute. === Example === ```elixir defmodule RequiredBehaviour do @behaviour StackBehaviour @required_callbacks [:push/2, :pop/1] end ``` In the example above, the module `RequiredBehaviour` enforces that any module using it must implement the `push/2` and `pop/1` functions, as specified by the `StackBehaviour`.
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