[#53097] [ruby-trunk - Bug #8000][Open] "require 'tk'" segfaults on 64-bit linux with Tk 8.6 — "edmccard (Ed McCardell)" <edmccard@...>
25 messages
2013/03/02
[#53199] [ruby-trunk - Bug #8040][Open] Unexpect behavior when using keyword arguments — "pabloh (Pablo Herrero)" <pablodherrero@...>
11 messages
2013/03/07
[#53203] [ruby-trunk - Feature #8042][Open] Add Addrinfo#socket to create a socket that is not connected or bound — "drbrain (Eric Hodel)" <[email protected]>
12 messages
2013/03/07
[#55610] [ruby-trunk - Feature #8042] Add Addrinfo#socket to create a socket that is not connected or bound
— "headius (Charles Nutter)" <headius@...>
2013/06/23
[#53211] [ruby-trunk - Feature #8046][Open] allow Object#extend to take a block — "phluid61 (Matthew Kerwin)" <matthew@...>
6 messages
2013/03/08
[#53248] Github commit log should not be used as references on redmine — Marc-Andre Lafortune <ruby-core-mailing-list@...>
Github commit log should not be used as references on redmine. E.g:
10 messages
2013/03/09
[#53249] Re: Github commit log should not be used as references on redmine
— Zachary Scott <zachary@...>
2013/03/09
I think redmine should ignore flags like \[GH.*#\d*\] or something similar.
[#53606] Re: Github commit log should not be used as references on redmine
— Zachary Scott <zachary@...>
2013/03/21
Ping!
[#53615] Re: Github commit log should not be used as references on redmine
— "NARUSE, Yui" <naruse@...>
2013/03/22
The best place of creating Feature Requests for bug.ruby-lang.org's Redmine
[#53349] [ruby-trunk - Bug #8080][Open] Segfault in rb_fd_set — "jonleighton (Jon Leighton)" <j@...>
8 messages
2013/03/12
[#53386] [CommonRuby - Feature #8088][Open] Method#parameters (and friends) should provide useful information about core methods — "headius (Charles Nutter)" <headius@...>
14 messages
2013/03/13
[#55921] [CommonRuby - Feature #8088] Method#parameters (and friends) should provide useful information about core methods
— "headius (Charles Nutter)" <headius@...>
2013/07/10
[#55922] Re: [CommonRuby - Feature #8088] Method#parameters (and friends) should provide useful information about core methods
— Yorick Peterse <yorickpeterse@...>
2013/07/10
Consider the following code:
[#55926] Re: [CommonRuby - Feature #8088] Method#parameters (and friends) should provide useful information about core methods
— Charles Oliver Nutter <headius@...>
2013/07/10
On Wed, Jul 10, 2013 at 11:16 AM, Yorick Peterse
[#53412] [CommonRuby - Feature #8096][Open] introduce Time.current_timestamp — "vipulnsward (Vipul Amler)" <vipulnsward@...>
34 messages
2013/03/14
[#53461] [CommonRuby - Feature #8096] introduce Time.current_timestamp
— "vipulnsward (Vipul Amler)" <vipulnsward@...>
2013/03/15
[#53478] [ruby-trunk - Feature #8107][Open] [patch] runtime flag to track object allocation metadata — "tmm1 (Aman Gupta)" <[email protected]>
20 messages
2013/03/16
[#53526] [ruby-trunk - Feature #8107] [patch] runtime flag to track object allocation metadata
— "tmm1 (Aman Gupta)" <[email protected]>
2013/03/19
[#53523] [ruby-trunk - Bug #8122][Open] [patch] gc: GC.stat improvements and related cleanup — "tmm1 (Aman Gupta)" <[email protected]>
5 messages
2013/03/19
[#53585] Consistent hashing in the face of HashDOS? — Charles Oliver Nutter <headius@...>
It had to happen eventually...
7 messages
2013/03/21
[#53599] [Backport 200 - Backport #8135][Open] Backport escape all closing parens - r39858 — "vo.x (Vit Ondruch)" <v.ondruch@...>
7 messages
2013/03/21
[#53619] [ruby-trunk - Bug #8142][Open] [patch] iseq: reduce array allocations for simple sequences — "tmm1 (Aman Gupta)" <[email protected]>
7 messages
2013/03/22
[#53635] [ruby-trunk - Bug #8148][Open] [patch] reduce allocations due to __FILE__ and {class,module}_eval — "tmm1 (Aman Gupta)" <[email protected]>
6 messages
2013/03/22
[#54391] [ruby-trunk - Bug #8148] [patch] reduce allocations due to __FILE__ and {class,module}_eval
— "headius (Charles Nutter)" <headius@...>
2013/04/17
[#53679] Why doesn’t String#+ return an untrusted result if self or other is untrusted? — Nikolai Weibull <now@...>
Hi!
5 messages
2013/03/23
[#53680] Re: [ruby-core:53679] Why doesn’t String#+ return an untrusted result if self or other is untrusted?
— KOSAKI Motohiro <kosaki.motohiro@...>
2013/03/23
On Sat, Mar 23, 2013 at 2:45 PM, Nikolai Weibull <[email protected]> wrote:
[#53685] Re: [ruby-core:53680] Re: [ruby-core:53679] Why doesn’t String#+ return an untrusted result if self or other is untrusted?
— Nikolai Weibull <now@...>
2013/03/23
On Sat, Mar 23, 2013 at 8:30 PM, KOSAKI Motohiro
[#53688] [ruby-trunk - Feature #8158][Open] lightweight structure for loaded features index — "funny_falcon (Yura Sokolov)" <funny.falcon@...>
27 messages
2013/03/24
[#53692] [ruby-trunk - Bug #8159][Open] Build failure introduced by Rinda changes — "luislavena (Luis Lavena)" <luislavena@...>
22 messages
2013/03/24
[#53713] [ruby-trunk - Bug #8159] Build failure introduced by Rinda changes
— "naruse (Yui NARUSE)" <naruse@...>
2013/03/25
[#53717] [ruby-trunk - Bug #8159] Build failure introduced by Rinda changes
— "naruse (Yui NARUSE)" <naruse@...>
2013/03/25
[#53709] [Backport 200 - Backport #8163][Assigned] Backport r39919 — "authorNari (Narihiro Nakamura)" <authorNari@...>
6 messages
2013/03/25
[#53733] [ruby-trunk - Bug #8165][Open] Problems with require — "Krugloff (Alexandr Kruglov)" <mr.krugloff@...>
12 messages
2013/03/26
[#53764] [ruby-trunk - Bug #8173][Open] 2-arg form of Time.at can take a Time as either argument — "hasari (Hiro Asari)" <asari.ruby@...>
8 messages
2013/03/27
[#53808] [ruby-trunk - Feature #8181][Open] New flag for strftime that supports adding ordinal suffixes to numbers — "tkellen (Tyler Kellen)" <tyler@...>
10 messages
2013/03/28
[#53811] [ruby-trunk - Bug #8182][Open] XMLRPC request fails with "Wrong size. Was 31564, should be 1501" — "tsagadar (Marcel Mueller)" <marcel.mueller@...>
28 messages
2013/03/28
[#53825] Thread/fork issue — Jason Gladish <jason@...>
Hello all,
9 messages
2013/03/29
[#53832] Re: Thread/fork issue
— Tanaka Akira <akr@...>
2013/03/29
2013/3/30 Jason Gladish <[email protected]>:
[#53887] Re: Thread/fork issue
— Tanaka Akira <akr@...>
2013/04/02
2013/3/30 Tanaka Akira <[email protected]>:
[#53901] Re: Thread/fork issue
— KOSAKI Motohiro <kosaki.motohiro@...>
2013/04/02
> I wrote a simple script to reproduce the problem.
[#53849] [ruby-trunk - Feature #8191][Open] Short-hand syntax for duck-typing — "wardrop (Tom Wardrop)" <tom@...>
48 messages
2013/03/31
[#53894] [ruby-trunk - Feature #8191] Short-hand syntax for duck-typing
— "rosenfeld (Rodrigo Rosenfeld Rosas)" <rr.rosas@...>
2013/04/02
[#53938] [ruby-trunk - Feature #8191] Short-hand syntax for duck-typing
— "phluid61 (Matthew Kerwin)" <matthew@...>
2013/04/03
[#53916] [ruby-trunk - Feature #8191] Short-hand syntax for duck-typing
— "wardrop (Tom Wardrop)" <tom@...>
2013/04/03
[#53850] An evaluation of 2.0.0 release — Yusuke Endoh <mame@...>
Let's look back at 2.0.0 release so that we can do better next time.
12 messages
2013/03/31
[#53853] Re: An evaluation of 2.0.0 release
— V咜 Ondruch <v.ondruch@...>
2013/03/31
Hello Yusuke,
[ruby-core:53243] [ruby-trunk - Feature #7604] Make === comparison operator ability to delegate comparison to an argument
From:
"prijutme4ty (Ilya Vorontsov)" <prijutme4ty@...>
Date:
2013-03-08 21:41:26 UTC
List:
ruby-core #53243
Issue #7604 has been updated by prijutme4ty (Ilya Vorontsov).
boris_stitnicky (Boris Stitnicky) wrote:
> Let me know when you make the first commit.
I released proof-of-concept gem. https://github.com/prijutme4ty/flex_coerce It makes no changes in behavior of base classes, you need to patch only your own class. But actually I didn't found any use-cases of this (e.g. physical quantities more naturally looks if there is a special quantity representing unity). I hope you'll hint me some good applications of this gem.
It's sad but #=== doesn't use coerce so this gem can't help me solve my task. So I'll soon create another gem that patches === method.
----------------------------------------
Feature #7604: Make === comparison operator ability to delegate comparison to an argument
https://bugs.ruby-lang.org/issues/7604#change-37403
Author: prijutme4ty (Ilya Vorontsov)
Status: Open
Priority: Normal
Assignee: matz (Yukihiro Matsumoto)
Category: core
Target version: next minor
=begin
I propose to expand default behaviour of === operator in the following way:
Objects have additional instance method Object#reverse_comparison?(other) which is false by default in all basic classes.
Each class that overrides Object#===(other) should check whether reverse_comparison? is true or false
If it is false, behavior is not changed at all.
If it is true, comparison is delegated to === method of an argument with self as an argument.
This technique can help in constructing RSpec-style matchers for case statement. Example:
# usual method call
arr = %w[cat dog rat bat]
puts arr.end_with?(%w[dog bat]) # ==> false
puts arr.end_with?(%w[rat bat]) # ==> true
puts arr.end_with?(%w[bat]) # ==> true
# predicate-style case
case %w[cat dog rat bat].end_with?
when %w[dog bat]
puts '..., dog, bat'
when %w[rat bat]
puts '..., rat, bat'
when %w[bat]
puts '..., bat'
else
puts 'smth else'
end
# ==> ..., rat, bat
Code needed to run this is not very complex:
class Object
def reverse_comparison?(other)
false
end
alias_method :'old===', :'==='
def ===(other)
(other.reverse_comparison?(self) ? (other.send 'old===',self) : (self.send 'old===',other))
end
end
class Predicate
def initialize(&block)
@block = block
end
def reverse_comparison?(other)
true
end
def ===(*args)
@block.call(*args)
end
end
class Array
alias_method :'old===', :'==='
def ===(other)
other.reverse_comparison?(self) ? (other.send('===',self)) : (self.send('old===',other))
end
def end_with?(expected_elements = nil)
return last(expected_elements.size) == expected_elements if expected_elements
Predicate.new{|suffix| last(suffix.size) == suffix }
end
end
This technique looks powerful and beautiful for me. One detail is that obj#reverse_comparison? can distinguish different types of arguments and returns true only for certain types of given object. Also this can be used to prevent double-mirroring (as shown below)
The problem is that many base classes already defined custom === operator, so each of those classes (Fixnum, Float, String, Regexp, Range etc) should be redefined in such a way to make a solution full-fledged.
Another problem is case that both objects defined reverse_comparison? to return true. In my solution Predicate#=== just ignores result of revese_comparison? which is not consistent.
Another possible way is to raise errors on double mirroring:
def reverse_comparison?(other)
raise 'double mirroring' if @__mirroring_started
@__mirroring_started = true
return true unless other.reverse_comparison?(self)
false
ensure
remove_instance_variable :@__mirroring_started
end
My proposal is to add reverse_comparison? method and change base classes operator === to use its result as shown above. May be it's worth also to make a class analogous to Predicate in stdlib.
=end
--
http://bugs.ruby-lang.org/