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== Behavior (Elixir) == [[File:Elixir logo.png|frame|right|alt=Elixir|Elixir Logo]] A '''behavior''' is a module in Elixir that defines a set of functions that a module implementing that behavior is expected to provide. Behaviors help in organizing code and establishing clear contracts between modules. == Overview == In Elixir, a behavior is created using the `@behaviour` module attribute, followed by the behavior name. For example: ```elixir @behaviour MyBehavior ``` Implementing a behavior requires the module to provide function definitions for all the functions specified by the behavior. If a module claims to implement a behavior but doesn't provide the required function definitions, a compile-time warning is raised. == Purpose == Behaviors in Elixir serve several purposes. They help enforce consistency and provide a clear understanding of the functionality expected from modules that implement them. By defining a behavior, users can rely on certain functionality being available in a module. Behaviors also facilitate code reuse, as multiple modules can implement the same behavior, allowing them to be used interchangeably. == Usage == To implement a behavior, a module must include the `@behaviour` attribute and define all the functions specified by the behavior. For example: ```elixir defmodule MyModule do @behaviour MyBehavior def function1, do: :ok def function2, do: :ok end ``` Be aware that omitting any of the required functions will result in a compile-time error. == Examples == Here are some examples of behaviors commonly used in Elixir: * `Enumerable`: Defines functions for working with collections. * `Collectable`: Specifies functions for creating and manipulating collections. * `Inspect`: Specifies functions for generating the string representation of a data structure. These are just a few examples, and Elixir provides many other built-in behaviors. However, it is also possible to define custom behaviors to suit specific application needs. == Conclusion == Behaviors in Elixir are powerful tools for organizing code and establishing contracts between modules. They enforce consistency, promote code reuse, and make it easier to reason about a system's behavior. By leveraging behaviors, Elixir developers can create clean, modular, and maintainable codebases. {{stub}} [[Category:Elixir (programming language)]] [[Category:Software development]]
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