Contents

# frozen_string_literal: true

require "active_support/descendants_tracker"

class Class
  # Returns an array with all classes that are < than its receiver.
  #
  #   class C; end
  #   C.descendants # => []
  #
  #   class B < C; end
  #   C.descendants # => [B]
  #
  #   class A < B; end
  #   C.descendants # => [B, A]
  #
  #   class D < C; end
  #   C.descendants # => [B, A, D]
  def descendants
    subclasses.concat(subclasses.flat_map(&:descendants))
  end

  prepend ActiveSupport::DescendantsTracker::ReloadedClassesFiltering
end

Version data entries

23 entries across 23 versions & 2 rubygems

Version	Path
activesupport-7.2.0.beta3	lib/active_support/core_ext/class/subclasses.rb
activesupport-7.2.0.beta2	lib/active_support/core_ext/class/subclasses.rb
activesupport-7.2.0.beta1	lib/active_support/core_ext/class/subclasses.rb