Question

Is it OK to create a class array and save every object of that class in it? I’m not sure if there is something similar to this natively in Ruby or a design pattern that accomplish this, so this is my solution for accessing every object of a class:

class Foo
  @@all = []

  def self.all
    @@all
  end

  def initialize 
    @@all << self
  end
end

Foo.all.each do |foo|
  # do something
end

Answer 1

You can do it, natively:

ObjectSpace.each_object(Foo) do |foo|
  # do something with foo
end