From: David Alan Black <dblack@...>
Date: 2001-03-06T01:51:29+09:00
Subject: [ruby-talk:12042] Re: RCR: shortcut for instance variable initialization

On Tue, 6 Mar 2001, Dave Thomas wrote:

> r2d2@mao.acc.umu.se (Niklas Frykholm) writes:
> 
> > >  class Msg
> > >    def initialize(@name, @type, @txt)
> > >    end
> > >  end
> > 
> > I do not like the idea. Adding magic just to save typing is only a
> > good idea if the magic is beautiful. This magic is not.
> 
> I agree it isn't pretty, and that the idea is probably dead. But let
> me explain my motivation.

[...]

> I'd still like to find a way to do this without duplicating the names.


I have what is probably a weird idea, but anyway, have a look:


  class Msg

    def initialize(name@, type@, txt@)

    # Here, the variables would be available *without* the '@'
    # e.g., "puts name"
    # and the assignments "@name = name", etc., would be automatic

    end
  end


The point would be to trigger the assignment, but without using
exactly the same name as the instance variables themselves.  (I do
find (@name, @type, @txt) confusing.)


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav