object_extract.rb

class Object
  def extract(*messages)
    messages.map(&method(:public_send))
  end
end

RSpec.describe Object do
  Foo = Struct.new(:bar, :baz)

  describe "#extract" do
    it "extracts each message from object" do
      bar, baz = Foo.new("lol", "wat").extract(:bar, :baz)

      expect(bar).to eq("lol")
      expect(baz).to eq("wat")
    end
  end

  describe "alternatives" do
    it "extracts each message from object" do
      foo = Foo.new("lol", "wat")
      bar, baz = [:bar, :baz].map(&foo.method(:public_send))

      expect(bar).to eq("lol")
      expect(baz).to eq("wat")
    end
    
    it "is just some messages" do
      foo = Foo.new("lol", "wat")
      bar, baz = foo.bar, foo.baz
      
      expect(bar).to eq("lol")
      expect(baz).to eq("wat")
    end
  end
end