anon_struct.rb

module Bar

  def self.anon_struct
    s = Struct.new(:foo, :bar, :baz)
    oid = s.object_id
    s = nil
    oid
  end

end

GC.start

oid = Bar.anon_struct

puts "Object id #{oid}:"
puts ObjectSpace._id2ref(oid).inspect


#
# OUTPUTS
#
# Object id 2151904380:
# <Class:0x0000010086e8f8>