From: Charles Oliver Nutter <headius@...>
Date: 2010-03-23T07:46:09+09:00
Subject: Re: Singleton methods without the singleton class

On Mon, Mar 22, 2010 at 1:44 PM, Intransition <transfire@gmail.com> wrote:
> How do you handle #extend?

I don't :)

#extend would be hard to support with this, since module methods are
often only callable against the object themselves; in other words, if
the module doesn't *actually* get inserted into the object's class
hierarchy, the methods won't be invokable.

Again, this can be forced under the covers in JRuby, but not through
any normal Ruby mechanisms I know of.

> I've always thought it would be wise if singleton methods were added
> to an anonymous module rather then directly to the object.* Perhaps
> taking this approach will work for JRuby. While not exactly like MRI
> it should be close enough for all practical purposes.
>
> (* Which is why Facets extends the #extend method to do exactly that
> if you supply it a block.)

Yes, that's probably wise, but #extend is mostly a deal-breaker in any
form because it forces a singleton object to be created.

- Charlie