From: Panagiotis Atmatzidis <ml@...>
Date: 2011-06-05T00:17:34+09:00
Subject: Re: CORE - Altering Behaviour of "each do" (default param "item")

go it...
On 04 Ιουν 2011, at 5:50 μ.μ., James Gray wrote:

> On Sat, Jun 4, 2011 at 6:50 AM, Ilias Lazaridis <ilias@lazaridis.com> wrote:
> 
>> 1.9
>> 
>> names = ["Jane", "Michele", "Isabella"]
>> 
>> # current behaviour
>> names.each do |name|
>> print name
>> end
>> 
>> #Question: How can I alter the behaviour of "each" in the following
>> way:
>> names.each do
>> print item         # "item" is used by default
>> end
>> 
>> Is this possible, without going to C-level?
>> 
> 
> Since everyone is still speaking to Ilias far too often, I'll try to use
> this as a teaching experiment.  I'll post the code that does exactly what he
> asked for.  Exactly.  If he follows standard form, you should see complaints
> about the non-code content of this message and the solution itself.
> 
> The solution:
> 
> #######################################################
> ### NEVER USE THIS CODE, unless your name is Ilias! ###
> #######################################################
> 
> class Item
>  def initialize(item)
>    @item = item
>  end
> 
>  attr_reader :item
> end
> 
> class Array
>  alias_method :sane_each, :each
>  def each(&iterator)
>    if iterator.arity.zero?
>      sane_each do |item|
>        Item.new(item).instance_eval(&iterator)
>      end
>    else
>      sane_each(&iterator)
>    end
>  end
> end
> 
> names = %w[Jane Michele Isabella]
> 
> names.each do |name|
>  puts name
> end
> 
> names.each do
>  puts item
> end
> 
> __END__
> 
> The most important thing to learn about Ilias is that he's not a programmer
> and has no desire to become one.  Ever.  Look at his code from this example.
> Ilias never posts project code.  He doesn't do anything.  He just attacks
> esoteric corners of syntax to incite debate.
> 
> His requests almost always involve terrible ideas that obviously violate
> some good programming practice.  If he doesn't know this, he has never
> learned it from all the years he has spent in many programming language
> groups.  If he does know it, he's using his knowledge optimally to push the
> most buttons.  Either way, you know what you need to know.
> 
> Note how he's never learned the tiniest bit of Ruby during any of his stays
> with us.  He doesn't indent like we do, he wouldn't think to call puts(),
> etc.  Ilias literally cannot assimilate, beyond minor efforts to gain
> sympathizers.
> 
> See his other messages for examples of how he usually selects the most
> abrasive language.  Words like "BARRIER" are used for a desired effect and
> he loves it when we tell him not to talk to us that way.
> 
> You all know that I try very hard to be polite and helpful.  Ilias is the
> exception.  I totally believe he is diagnosable.  Anytime we push "Reply,"
> we feed his needs.  It's hard, but you really have to ignore him.  It's the
> only option he leaves to us.
> 
> You won't see me respond when he complains about this message.  He'll say
> stupid things I'm dying to correct for all the watching eyes.  That's what
> Ilias does.  Though it hurts me, I won't push "Reply."  Just writing a
> message like this about a person kill's me.  But these are the only ways to
> minimize his reach.  We are not playing this game against a rational
> opponent.
> 
> Choose another soul to save on Ruby Talk and let this one go.
> 
> http://www.nationmaster.com/encyclopedia/Ilias-Lazaridis
> 
> James Edward Gray II

--
Panagiotis Atmatzidis

email: ml@convalesco.org
blog: http://www.convalesco.org

The wise man said: "Never argue with an idiot. They bring you down to their level and beat you with experience."