[ruby-dev:46235] [ruby-trunk - Bug #4971] Module#class_variables

Issue #4971 has been updated by elninorian (menuju sukses sukses).


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Bug #4971: Module#class_variables
https://bugs.ruby-lang.org/issues/4971#change-31066

Author: shugo (Shugo Maeda)
Status: Closed
Priority: Normal
Assignee: nobu (Nobuyoshi Nakada)
Category: core
Target version: 2.0.0
ruby -v: -


Ruby 1.9だとModule#class_variablesはスーパークラスのクラス変数を返しませんが、仕様でしょうか?

  class Foo
    @@foo = 123
  end
  
  class Bar < Foo
    @@bar = 456
  end
  
  p Bar.class_variables #=> 1.8では["@@bar", "@@foo"], 1.9では[:@@bar]

commit logには

    * variable.c (rb_mod_class_variables): class variables are no longer
      inherited.  [ruby-dev:23808]
    
と書いてあるのですが、当時のクラス変数の仕様って今の1.8とも1.9とも違う
仕様だったりするでしょうか。
Bar.class_variable_get(:@@foo)で値は取れるので、class_variablesで:@@fooを
返してもよい気がするのですが。



-- 
http://bugs.ruby-lang.org/