Run your objects as web apps in an insanely decoupled way

config.ru

class Object
  def to_app
    lambda do |env|
      _, method, args = env['REQUEST_PATH'].split('/')
      [200, {}, [self.send(method, *args).to_s]]
    end
  end
end

class HelloWorld
  def hello(name)
    "Hello, #{name}!"
  end
end

run HelloWorld.new.to_app

# This is not my idea, I read it time ago and wasn't able to find it today so I rewrote it (not sure the implementation is the same)
# start running rackup
# $ curl http://localhost:9292/hello/Txus
# Hello, Txus!