def with( obj )
  yield obj
end

with Math do |m|
  puts m.exp( 1 )
  puts m.exp( 2 )
  puts m.exp( 3 )
end

# Deeply nested modules
module Foo
  module Bar

    module Baz
      A_CONSTANT = 3
      def self.aMethod( x )
        x * A_CONSTANT + A_CONSTANT
      end
    end

    module Biz
      def self.anotherMethod( x )
        "hello #{x}"
      end
    end

  end
end

with Foo::Bar do |m|
  puts m::Baz.aMethod( 5 )
  puts m::Biz.anotherMethod( "bob" )
end