Elixir's Object Oriented Layer
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Elixir's object-oriented layer is based on message passing between processes like Erlang. It uses GenServer to implement objects as isolated processes that communicate asynchronously via casts or synchronously via calls. GenServer provides callbacks for implementing the object's behavior and encapsulating its state within the process.
Elixir's Object Oriented Layer
- 1. Elixir's Object Oriented Layer Paolo Montrasio paolo.montrasio@connettiva.eu https://github.com/pmontrasio/elixir-oo
- 2. OOP to me means only messaging, local retention and protection and hiding of state-process, and extreme late-binding of all things. It can be done in Smalltalk and in LISP. Alan Kay, one of fathers of object oriented programming http://www.purl.org/stefan_ram/pub/doc_kay_oop_en I might think, though I'm not quite sure if I believe this or not, but Erlang might be the only object oriented language because the 3 tenets of object oriented programming are that it's based on message passing, that you have isolation between objects and have polymorphism. Joe Armstrong, creator of Erlang, http://www.infoq.com/interviews/johnson-armstrong-oop
- 5. OO – Process Equivalence
- 8. Code running in the client process Code running in the server process
- 9. __MODULE__ for easier refactoring It returns {:ok, pid}
- 10. __MODULE__ for easier refactoring It returns {:ok, pid} cast: async message sending
- 11. __MODULE__ for easier refactoring It returns {:ok, pid} cast: async message sending call: sync message sending
- 12. __MODULE__ for easier refactoring It returns {:ok, pid} cast: async message sending call: sync message sending Implementation, callback of Genserver.cast :noreply, new state
- 13. __MODULE__ for easier refactoring It returns {:ok, pid} cast: async message sending call: sync message sending Implementation, callback of Genserver.cast :noreply, new state Implementation, callback of Genserver.call :reply, return value, new state
- 14. More clutter, especially in the client
- 17. Elixir's Object Oriented Layer Paolo Montrasio paolo.montrasio@connettiva.eu https://github.com/pmontrasio/elixir-oo GenServer documentation http://elixir-lang.org/docs/stable/elixir/GenServer.html GenServer implementation https://github.com/elixir-lang/elixir/blob/v1.2/lib/elixir/lib/gen_server.ex