How do I get a list of files that have been `required` in Ruby?

Question

This is purely an experiment, but I\'m wondering if it\'s possible to get a list of the require\'d gems at runtime via some kind of metaprogramming. For example

Answer 1

Just a slight touch to add to the previous -- consider that in order to precisely replace the behaviour of #require then you must also return a boolean value, so this is a more faithful override:

module Kernel
  alias :orig_require :require
  def require(name)
    print "Requiring #{name}"
    is_okay = orig_require(name)
    puts " - #{is_okay ? 'Yup!' : 'Nope :('}"
    is_okay
  end
end

Interestingly with some testing I was doing -- tracking down a chain of stuff blowing up when requiring a module -- then this became necessary!