From: Sam Stephenson <sstephenson@...>
Date: 2004-11-29T08:26:46+09:00
Subject: Re: private include

On Mon, 29 Nov 2004 07:56:27 +0900, trans.  (T. Onoma)
<transami@runbox.com> wrote:
> Is there a simple way to include a module such that all the included methods
> are private?

If you can change the module definition itself, just add ``private''
before defining any methods.

If not, perhaps this would work:

| class Module
|   def privately_include(mod)
|     self.class_eval {include(mod)}
|     mod.instance_methods.each do |m|
|       self.class_eval {private m.to_sym}
|     end
|     nil
|   end
| end

An example:

| irb(main):001:0> module Foo; def bar() end end
| => nil
| irb(main):002:0> class Baz; privately_include Foo end
| => nil
| irb(main):003:0> Baz.new.bar
| NoMethodError: private method `bar' called for #<Baz:0x402d4610>
|         from (irb):3

Note that this won't make future public methods defined in the module
private in the including class.
 
> Thanks,
> T.

Sam