[#80531] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...>

SASADA Koichi <ko1@ruby-lang.org> wrote:

24 messages 2017/04/02
[#80532] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/04/02

On 2017/04/02 11:35, Eric Wong wrote:

[#80540] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/04/03

SASADA Koichi <ko1@atdot.net> wrote:

[#81027] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/05/08

Eric Wong <normalperson@yhbt.net> wrote:

[#81028] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/05/08

On 2017/05/08 9:33, Eric Wong wrote:

[#81029] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/05/08

On 2017/05/08 10:53, SASADA Koichi wrote:

[#81031] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/05/08

SASADA Koichi <ko1@atdot.net> wrote:

[#81033] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/05/08

On 2017/05/08 12:01, Eric Wong wrote:

[#81035] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/05/08

SASADA Koichi <ko1@atdot.net> wrote:

[#81042] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/05/09

On 2017/05/08 15:36, Eric Wong wrote:

[#81044] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/05/09

SASADA Koichi <ko1@atdot.net> wrote:

[#81045] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — SASADA Koichi <ko1@...> 2017/05/09

On 2017/05/09 12:38, Eric Wong wrote:

[#81047] Re: [ruby-cvs:65407] normal:r58236 (trunk): thread.c: comments on M:N threading [ci skip] — Eric Wong <normalperson@...> 2017/05/09

SASADA Koichi <ko1@atdot.net> wrote:

[ruby-core:80720] [Ruby trunk Bug#13257] Symbol#singleton_class should be undef

From: akr@...
Date: 2017-04-17 06:30:48 UTC
List: ruby-core #80720
Issue #13257 has been updated by akr (Akira Tanaka).


I guess a some method such as Kernel#ancestor_modules, which returns all class/modules to search methods, supports your needs directly than undef'ing singleton_class.



----------------------------------------
Bug #13257: Symbol#singleton_class should be undef
https://bugs.ruby-lang.org/issues/13257#change-64271

* Author: tagomoris (Satoshi TAGOMORI)
* Status: Feedback
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-darwin15]
* Backport: 2.2: UNKNOWN, 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
Objects of some classes doesn't have singleton classes (e.g., Symbol, Integer, Float...).
Symbol#singleton_class raises TypeError.

But Symbol#respond_to?(:singleton_class) returns true, and we cannot know when #singleton_class returns a valid class or raise errors in any way (except for calling it).

I think that such #singleton_class methods should be undef.



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