From: Gavin Sinclair <gsinclair@...>
Date: 2012-01-30T22:31:54+09:00
Subject: Re: A little assistance please :)

On Fri, Jan 27, 2012 at 7:56 AM, Chad Perrin <code@apotheon.net> wrote:
> You're right, that's much better -- apart from the fact I have yet to
> come up with a single good reason for dynamic class names.

A pre-pre-alpha project of mine -- http://github.com/gsinclair/rgeom
-- implements a DSL to describe geometric shapes, which can then be
rendered into an image, given appropriate inputs.  (The DSL describes
the inputs etc.)

e.g.

  shape :polygon, ... { definition stuff I can't even remember } ...

The effect of that is to create a class called RGeom::Shape::Polygon
with some methods defined.  It all uses eval or class_eval or
whatever.

That class _needs_ to be named class because more methods need to be
defined.  So you need to be able to do

  class RGeom::Shape::Polygon
    def construct(parameters)
      ...
    end
    # etc.
  end

Maybe there's some other way I could do it that doesn't need a
dynamically named class, but I sure ain't looking for a different way.

Gavin