From: shasckaw <shasckaw@...>
Date: 2004-01-11T11:21:39+09:00
Subject: How to reproduce the tk dialect?

Hello,
when using tk, you can initialize tk objects with a block, example:

TkLabel.new(root) {
   text  'Hello, World!'
   pack  { padx 15 ; pady 15; side 'left' }
}

text, pack, padx, ..., are used as commands instead of key of a hash. tk 
objects allow to use a kind of ruby dialect, valid only in the context 
of that object.

I would like to reproduce that technique but I don't find how. I have 
already tried some code:

class Dialect
   def initialize
     yield
   end

   def add_some_stuff(stuff)
     @stuff = stuff
   end

   def show
     p @stuff
   end
end

Dialect.new {add_some_stuff("Hello world!"); show}

It doesn't work, the interpreter (1.8.0) saying add_some_stuff doesn't 
exist. I have also tried this:

class Dialect
   def add_some_stuff(stuff)
     @stuff = stuff
   end

   def show
     p @stuff
   end
end

var = Dialect.new
var.instance_eval  {add_some_stuff("Hello world!"); show}

It works but it uses an explicit call of instance_eval which I don't 
want to use. I have  searched how to do the job the same way as with tk, 
but I can't find! Can anyone help please?

Shasckaw