Rescoping a class within a module

scope_test.rb

module Foo
end

class Bar
  def initialize
    puts "Hello, this is Bar"
  end
end

class Baz
  def initialize
    puts "Hello, this is Baz"
  end
end

module Foo
  Bar = ::Bar
  class Baz < ::Baz; end
end

p Foo::Bar.new
p Foo::Baz.new

# Output

Hello, this is Bar
#<Bar:0x0000010092d370>
Hello, this is Baz
#<Foo::Baz:0x0000010092d2d0>