Helicopter

Helicopter turns your classes into helicopters, allowing them to keep track of their children.

Helicopter only makes classes track their direct children.

Add this line to your application's Gemfile:

gem 'helicopter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install helicopter

require 'helicopter'

class Foo
  extend Helicopter
end

class Bar < Foo
end

Foo.subclasses #=> [Bar]