[#47790] [ruby-trunk - Bug #7097][Open] Thread locals don't work inside Enumerator — "tenderlovemaking (Aaron Patterson)" <aaron@...>

32 messages 2012/10/01
[#47791] [ruby-trunk - Bug #7097][Assigned] Thread locals don't work inside Enumerator — "kosaki (Motohiro KOSAKI)" <kosaki.motohiro@...> 2012/10/01

[#47792] Re: [ruby-trunk - Bug #7097][Assigned] Thread locals don't work inside Enumerator — Aaron Patterson <tenderlove@...> 2012/10/01

On Tue, Oct 02, 2012 at 03:05:17AM +0900, kosaki (Motohiro KOSAKI) wrote:

[#47798] Re: [ruby-trunk - Bug #7097][Assigned] Thread locals don't work inside Enumerator — SASADA Koichi <ko1@...> 2012/10/01

(2012/10/02 3:12), Aaron Patterson wrote:

[#47800] Re: [ruby-trunk - Bug #7097][Assigned] Thread locals don't work inside Enumerator — SASADA Koichi <ko1@...> 2012/10/01

(2012/10/02 8:22), SASADA Koichi wrote:

[#47832] [ruby-trunk - Feature #7106][Open] FileUtils.touch should allow touching the symlink itself rather than the file the link points to — "cirrusthinking (Alessandro Diaferia)" <alessandro@...>

18 messages 2012/10/04

[#47847] [ruby-trunk - Bug #7110][Open] CGI: Add support for HTML5 <header> tag — "stomar (Marcus Stollsteimer)" <redmine@...>

16 messages 2012/10/05

[#47870] [ruby-trunk - Bug #7123][Open] Segmentation fault in ruby 1.9.3-p194 — "mscottford (M. Scott Ford)" <scott@...>

13 messages 2012/10/09

[#47880] [ruby-trunk - Bug #7134][Open] Signal handling bug in Mac OS X — "auastro (Andy Kitchen)" <kitchen.andy+rubybug@...>

17 messages 2012/10/10

[#47881] [ruby-trunk - Bug #7135][Open] GC bug in Ruby 1.9.3-p194? — "alexdowad (Alex Dowad)" <alexinbeijing@...>

21 messages 2012/10/10

[#47887] [ruby-trunk - Bug #7137][Open] Date.parse overly lenient when attempting to parse Monday? — "garysweaver (Gary Weaver)" <garysweaver@...>

12 messages 2012/10/10

[#47930] [ruby-trunk - Feature #7148][Open] Improved Tempfile w/o DelegateClass — "Glass_saga (Masaki Matsushita)" <glass.saga@...>

14 messages 2012/10/12

[#47970] [ruby-trunk - Bug #7158][Open] require is slow in its bookkeeping; can make Rails startup 2.2x faster — "gregprice (Greg Price)" <price@...>

30 messages 2012/10/14

[#48027] [Backport93 - Backport #7172][Open] [[Ruby 1.9:]] fix rbconfig for --enable-load-relative (v2) — "mpapis (Michal Papis)" <mpapis@...>

13 messages 2012/10/16

[#48053] [ruby-trunk - Bug #7180][Open] set_trace_func with error in proc block locks up Ruby with 100% cpu usage and no way to exit without killing proc — "garysweaver (Gary Weaver)" <garysweaver@...>

8 messages 2012/10/17

[#48072] [ruby-trunk - Bug #7184][Open] --disable-gems commandline parameter does not show up with ruby -h — "steenslag (siep korteling)" <s.korteling@...>

10 messages 2012/10/18

[#48130] [ruby-trunk - Bug #7200][Open] Setting external encoding with BOM| — "brixen (Brian Ford)" <brixen@...>

14 messages 2012/10/21

[#48191] [ANN] 2.0.0 feature freeze — Yusuke Endoh <mame@...>

Japanese later; 日本語は後で

37 messages 2012/10/24
[#48696] Re: [ANN] 2.0.0 feature freeze — SASADA Koichi <ko1@...> 2012/11/01

(2012/10/24 5:39), Yusuke Endoh wrote:

[#48260] [ruby-trunk - Bug #7214][Open] Ruby 2.0 breaks support for some debugging tools — "banister (john mair)" <jrmair@...>

22 messages 2012/10/25

[#48315] [ruby-trunk - Bug #7220][Open] StringIO#initialize_copy causes aliasing between the objects — "brixen (Brian Ford)" <brixen@...>

13 messages 2012/10/26

[#48413] [ruby-trunk - Bug #7221][Open] Unable to compile kgio under 1.9.3 with error: ruby-1.9.3-<plvl>/lib/ruby/1.9.1/mkmf.rb:597:in `Integer': can't convert nil into Integer (TypeError) — "davidderyldowney (David Deryl Downey)" <me@...>

9 messages 2012/10/27

[#48549] [ruby-trunk - Feature #7240][Open] Inheritable #included/#extended Hooks For Modules — "apotonick (Nick Sutterer)" <apotonick@...>

14 messages 2012/10/29

[#48551] [ruby-trunk - Feature #7241][Open] Enumerable#to_h proposal — "nathan.f77 (Nathan Broadbent)" <nathan.f77@...>

23 messages 2012/10/29

[#48552] [ruby-trunk - Bug #7242][Open] Bignum mathematical accuracy regression in r31695 — "mhall (Matthew Hall)" <mhall@...>

11 messages 2012/10/29

[ruby-core:48654] [ruby-trunk - Feature #7240] Inheritable #included/#extended Hooks For Modules

From: "apotonick (Nick Sutterer)" <apotonick@...>
Date: 2012-10-31 10:01:28 UTC
List: ruby-core #48654
Issue #7240 has been updated by apotonick (Nick Sutterer).


Interesting points, mates. I don't know about the method tables so all I can do is summarizing what we came up with so far.

h2. 1. Explicitely define inheritable class methods.

<code>module M
inclusive/inheritable
  def self.i_will_be_inherited
</code>

When then included, this method will be inherited. This would solve most problems as 
<pre>
inclusive/inheritable
  def self.included(..)
</PRE>
would mean that the #included method itself can be made inheritable!


h2. Explicitely inherit when including

If we had a new #include! method we inherit all (?) class methods.

<pre>module M
  def self.m
end

module U
  include! M

  # class method #m is now around.
end
</pre>

Problem here is: The *user* has to know about whether or not to import class methods which is not what I want as a gem developer (I don't want my gem users to know whether they should use #include or #include!). Also, no fine-tuning since _all_ class methods are imported.


----------------------------------------
Feature #7240: Inheritable #included/#extended Hooks For Modules
https://bugs.ruby-lang.org/issues/7240#change-32084

Author: apotonick (Nick Sutterer)
Status: Open
Priority: Normal
Assignee: 
Category: 
Target version: 


An inheritable hook mechanism for modules would be a great way for module/gem authors to simplify their implementations.


The Problem
-----------

Let's say I have the following module.

  module A
    def self.included(base)
      # add class methods to base
    end
  end

So, A is overriding the #included hook to add class methods to base.

module B
  include A

  # class methods from A are here.
end

Since B is including A, A's #included method is invoked and A's class methods will be copied to B.

module C
  include B

  # class methods from B are lost.
end

When including B into C, B's #included is invoked and A's #included is lost. In our example, this means no class methods from A are in C.


Proposal
--------

It would be cool if #included/#extended in a module could be inherited to including descendants. I wrote a small gem "uber" that does this kind of stuff with a simple recursion. Roughly, it works like this.

  module A
    extend InheritableIncluded # "execute my #included everytime me or my descendents are included."

    def self.included(base)
      # add class methods to base
    end
  end

Now, A's #included is invoked every time it or a descending module is included. In our example, class methods from A would be around in C.

When discussing this with Matz we agreed that this might be really useful in Ruby itself. I'm just not sure how to mark inheritable hooks.


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

In This Thread