A minimal layout and explanation of Sinatra inner workings, regarding compactness, and hooking.

hijack1.rb

module Aleph
  class Application
    def self.run!
      puts "hello world"
    end
  end
  
  # here is where the trick with sinatra is!
  # all of your path defenitions and such have built up a hash
  # of routes. When ruby reaches EOF in your script, it calls this
  # little line right here, which will run the class method run!
  # up there. It's a clever hook. Makes for easy... hooking?
  at_exit { Application.run! }
end

# including Aleph executes the 'at_exit {}' line
include Aleph