From: Stefan Schmiedl <s@...>
Date: 2001-12-07T08:33:10+09:00
Subject: [ruby-talk:27767] Re: Package Naming

Joel VanderWerf (2001-12-07 07:59):

> Stefan Schmiedl wrote:
> > 
> > just to throw in another point of view:
> > we could do it the dylan way ...
> > 
> > http://www.gwydiondylan.org/drm/drm_112.htm#MARKER-9-2016
> > 
> > I think, the basic idea there is that a library exports
> > a set of symbols and the importing units can rename it
> > according to their tastes and needs.
> 
> Does the Dylan way do anything better than the following?
> 
>   require 'some-module'
>   MyClassName = SomeModule::SomeClass?
> 

It's been quite a while, since I last used Dylan,
so I just paste the example from the above website.

define module graphics
  use dylan;
  create draw-line,
         erase-line,
         invert-line,
         skew-line,
         frame-rect,
         fill-rect,
         erase-rect,
         invert-rect;
end module graphics;

define module lines
  use dylan;
  use graphics,
      import: {draw-line,
               erase-line,
               invert-line,
               skew-line};
end module lines;

define module rectangles
  use dylan;
  use graphics,
      prefix: "graphics$",
      exclude: {skew-line};
end module rectangles;

define module dylan-gx
  use dylan, export: all;
  use graphics,
      rename: {skew-line => warp-line},
      export: all;
end module dylan-gx;

The modules created by these module declarations would have
access to bindings with the following names:
    graphics
      draw-line
      erase-line
      invert-line
      skew-line
      frame-rect
      fill-rect
      erase-rect
      invert-rect
plus all the bindings in the Dylan module
    lines
      draw-line
      erase-line
      invert-line
      skew-line
plus all the bindings in the Dylan module
    rectangles
      graphics$draw-line
      graphics$erase-line
      graphics$invert-line
      graphics$frame-rect
      graphics$fill-rect
      graphics$erase-rect
      graphics$invert-rect
plus all the bindings in the Dylan module
    dylan-gx
      draw-line
      erase-line
      invert-line
      warp-line
      frame-rect
      fill-rect
      erase-rect
      invert-rect
plus all the bindings in the Dylan module

s.

-- 
Stefan Schmiedl
EDV-Beratung, Programmierung, Schulung
Loreleystr. 5, 94315 Straubing, Germany
Tel. (0 94 21) 74 01 06
Public Key: http://xss.de/stefan.public

shhhh ... I can't hear my code!