Are you tired of all of that modules, processes and functions nonsense? Do you want to just use classes, objects and methods? If so, use OOP [1] library in Elixir [2]!
[1] Actually, according to Alan Key, the inventor of OOP, "objects" is the lesser idea; the big idea is "messaging". In that sense, I can't agree more with Joe Armstrong's quote that Erlang is "possibly the only object-oriented language".
[2] Please don't. You've been warned.
Lightning Talks - Wojtek Mach (ElixirConfEU 2016)
import OOP
class Person do
var :name
def say_hello_to(who) do
what = "Hello #{who.name}"
IO.puts("#{this.name}: #{what}")
end
end
joe = Person.new(name: "Joe")
mike = Person.new(name: "Mike")
robert = Person.new(name: "Robert")
joe.say_hello_to(mike) # Joe: Hello Mike
mike.say_hello_to(joe) # Mike: Hello Joe
mike.say_hello_to(robert) # Mike: Hello Robert
robert.say_hello_to(mike) # Robert: Hello Mike
joe.set_name("Hipster Joe")
joe.name # => Hipster Joe
An OOP library wouldn't be complete without inheritance:
class Animal do
var :name
end
class Dog < Animal do
var :breed
end
snuffles = Dog.new(name: "Snuffles", breed: "Shih Tzu")
snuffles.name # => "Snuffles"
snuffles.breed # => "Shih Tzu"
... or multiple inheritance:
class Human do
var :name
end
class Horse do
var :horseshoes_on?
end
class Centaur < [Human, Horse] do
end
john = Centaur.new(name: "John", horseshoes_on?: true)
john.name # => "John"
john.horseshoes_on? # => true
See more usage in the test suite.
- Add
oop
to your list of dependencies inmix.exs
:
```elixir
def deps do
[{:oop, "~> 0.1.0"}]
end
```
- Ensure
oop
is started before your application:
```elixir
def application do
[applications: [:oop]]
end
```
The MIT License (MIT)
Copyright (c) 2015-2016 Wojciech Mach
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.