Issue #8026 has been updated by knu (Akinori MUSHA).


What about adding Module#prepend?(other) also, which could be implemented in ruby as follows?

module Module
  def prepend?(other)
    ancestors.find { |mod|
      break false if mod == self
      mod == other
    }
  end
end

----------------------------------------
Feature #8026: Need Module#prepended_modules
https://bugs.ruby-lang.org/issues/8026#change-40710

Author: marcandre (Marc-Andre Lafortune)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: current: 2.1.0


We should have a way to get the list of prepended modules of a class or module.

    module Mixin
    end

    module Outer
      prepend Mixin
    end

    Mixin.prepended_modules   #=> []
    Outer.prepended_modules   #=> [Mixin]

See also bug #8025.


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