From: Lazaridis Ilias <ilias@...>
Date: 2011-07-05T02:07:21+09:00
Subject: [ruby-core:37784] [Ruby 1.9 - Bug #4893] Literal Instantiation breaks Object Model


Issue #4893 has been updated by Lazaridis Ilias.


Yukihiro Matsumoto wrote:
> Perhaps you don't (want to) understand my comment.  

Perhaps you don't (want to) understand a technically perfectly valid solution?

> Introducing new global status is not acceptable as String's new feature.  Period.

DEFINITION:

What do you mean with "global status"?

Would it be still a "global status", if the flag would be set automatically and internally, without user intervention?

INFLUENCE:

Why is it not acceptable?

What is your rationale?

Can you backup this rationales with test-code?

-

Maybe *you* should now use *code* to express what do you mean with "global status" etc., because your attitude is *very* counter productive and *very* ungentle against a person which has invested nearly two weeks to produce this *technically* *valid* solution.

You wrote earlier:

 "Show me the outline of your so-called "final implementation", by working code, not by words in vain. "

Now I say (using your wording):

Show me the outline of your so-called "global status" problem, by working test-code, not by words in vain.


----------------------------------------
Bug #4893: Literal Instantiation breaks Object Model
http://redmine.ruby-lang.org/issues/4893

Author: Lazaridis Ilias
Status: Rejected
Priority: Normal
Assignee: Yukihiro Matsumoto
Category: 
Target version: 
ruby -v: 1.9.2


#String2.rb 
class String 
  def initialize(val) 
    self.replace(val) 
    puts object_id 
  end 
  def my_method_test 
    'has method <my_method_test>' 
  end 
end 

# command line 
$ irb 
irb(main):001:0> original = String.new("original") 
=> "original" 
irb(main):002:0> load "String2.rb" 
=> true 
irb(main):003:0> altered = String.new("altered") 
21878604 
=> "altered" 
irb(main):004:0> altered.my_method_test 
=> "has method <my_method_test>" 
irb(main):005:0> literal = "literal" 
=> "literal" 
irb(main):006:0> literal.my_method_test 
=> "has method <my_method_test>" 
irb(main):007:0> 

- 

The initialize method is an integral part of the class String. 
From the moment that "String2.rb" is loaded, the initialize method of 
class String has been validly redefined. 

(The behaviour of the String class within the "irb session" is 
altered) 

The altered initialize method is now an integral part of the class 
String. 

The altered String object behaves as expected (responds to 
"my_method_test, initialized via redefined initialize method). 

The String(Literal) object responds to "my_method_test", but it is was 
not initialized with the redefined initialize method. 

- 

The "Literal Instantiation" calls the original (core-C-level) String 
initialize method instead of the redefined one (user-language-level). 
This *breaks* the object model. 





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