[#43077] problems committing — Aaron Patterson <tenderlove@...>
It seems like the disk might be full on the svn server:
5 messages
2012/03/05
[#43090] "\\".gsub("\\", "\\\\") == "\\" ?!!! — Rodrigo Rosenfeld Rosas <rr.rosas@...>
Please, help me understand what is happening here.
6 messages
2012/03/06
[#43094] Re: "\\".gsub("\\", "\\\\") == "\\" ?!!!
— Xavier Noria <fxn@...>
2012/03/06
A literal passed as second argument to gsub goes over two
[#43120] [ruby-trunk - Bug #6124][Open] What is the purpose of "fake" gems in Ruby — Vit Ondruch <v.ondruch@...>
27 messages
2012/03/07
[#43142] Questions about thread performance (with benchmark included) — Rodrigo Rosenfeld Rosas <rr.rosas@...>
A while ago I've written an article entitled "How Nokogiri and JRuby
10 messages
2012/03/08
[#43785] Re: Questions about thread performance (with benchmark included)
— Tomoyuki Chikanaga <nagachika00@...>
2012/03/28
Hello, Rodrigo.
[#43797] Re: Questions about thread performance (with benchmark included)
— Rodrigo Rosenfeld Rosas <rr.rosas@...>
2012/03/28
Em 27-03-2012 23:22, Tomoyuki Chikanaga escreveu:
[#44213] Re: Questions about thread performance (with benchmark included)
— SASADA Koichi <ko1@...>
2012/04/09
Hi,
[#44214] Re: Questions about thread performance (with benchmark included)
— Urabe Shyouhei <shyouhei@...>
2012/04/09
#### MRI threads myths and facts #####
[#44220] Re: Questions about thread performance (with benchmark included)
— Rodrigo Rosenfeld Rosas <rr.rosas@...>
2012/04/09
Hi Urabe, thank you for your input, but I think you have
[#43163] Help w/ some C to create NullClass — trans <transfire@...>
I am trying to write a C extension for "NullClass" functionality. I've
3 messages
2012/03/10
[#43245] [ruby-trunk - Bug #6131][Open] Ctrl-C handler do not work from exec process (Windows) — Luis Lavena <luislavena@...>
10 messages
2012/03/12
[#43279] [ruby-trunk - Bug #6148][Open] ruby_1_9_3 revision conflict — Jon Forums <redmine@...>
4 messages
2012/03/14
[#43313] [ruby-trunk - Feature #6150][Open] add Enumerable#grep_v — Suraj Kurapati <sunaku@...>
17 messages
2012/03/15
[#43325] [ruby-trunk - Bug #6154][Open] Eliminate extending WaitReadable/Writable at runtime — Charles Nutter <headius@...>
25 messages
2012/03/16
[#43369] Re: [ruby-trunk - Bug #6154][Open] Eliminate extending WaitReadable/Writable at runtime
— Tanaka Akira <akr@...>
2012/03/17
2012/3/16 Charles Nutter <[email protected]>:
[#43326] [ruby-trunk - Bug #6154] Eliminate extending WaitReadable/Writable at runtime
— Charles Nutter <headius@...>
2012/03/16
[#43334] [ruby-trunk - Bug #6155][Open] Enumerable::Lazy#flat_map raises an exception when an element does not respond to #each — Dan Kubb <dan.kubb@...>
9 messages
2012/03/16
[#43345] [ruby-trunk - Bug #6159][Open] Enumerable::Lazy#inspect — Benoit Daloze <redmine@...>
10 messages
2012/03/16
[#43497] [ruby-trunk - Bug #6179][Open] File::pos broken in Windows 1.9.3p125 — "jmthomas (Jason Thomas)" <jmthomas@...>
24 messages
2012/03/20
[#43502] [ruby-trunk - Feature #6180][Open] to_b for converting objects to a boolean value — "AaronLasseigne (Aaron Lasseigne)" <aaron.lasseigne@...>
17 messages
2012/03/20
[#43529] [ruby-trunk - Bug #6183][Open] Enumerator::Lazy performance issue — "gregolsen (Innokenty Mikhailov)" <anotheroneman@...>
36 messages
2012/03/21
[#43814] [ruby-trunk - Feature #6219][Open] Return value of Hash#store — "MartinBosslet (Martin Bosslet)" <Martin.Bosslet@...>
20 messages
2012/03/28
[#43904] [ruby-trunk - Feature #6225][Open] Hash#+ — "trans (Thomas Sawyer)" <transfire@...>
36 messages
2012/03/29
[#43923] [ruby-trunk - Feature #6225] Hash#+
— "shyouhei (Shyouhei Urabe)" <shyouhei@...>
2012/03/30
[#43909] [ruby-trunk - Feature #6225][Assigned] Hash#+
— "mame (Yusuke Endoh)" <mame@...>
2012/03/29
[#43920] [ruby-trunk - Feature #6225] Hash#+
— "shyouhei (Shyouhei Urabe)" <shyouhei@...>
2012/03/30
[#43951] [ruby-trunk - Bug #6228][Open] [mingw] Errno::EBADF in ruby/test_io.rb on ruby_1_9_3 — "jonforums (Jon Forums)" <redmine@...>
28 messages
2012/03/30
[#43996] [ruby-trunk - Bug #6236][Open] WEBrick::HTTPServer swallows Exception — "regularfry (Alex Young)" <alex@...>
13 messages
2012/03/31
[#44015] [Ruby 1.8 - Bug #6239][Open] super Does Not Pass Modified Rest Args When Originally Empty — "mudge (Paul Mucur)" <mudge@...>
6 messages
2012/03/31
[ruby-core:43319] [ruby-trunk - Bug #6142] Enumerable::Lazy#zip doesn't rewind internal enumerators
From:
Shugo Maeda <redmine@...>
Date:
2012-03-16 03:03:38 UTC
List:
ruby-core #43319
Issue #6142 has been updated by Shugo Maeda.
File lazy_zip_to_a.diff added
Innokenty Mikhailov wrote:
> a = (1..3).lazy.zip('a'..'z')
> a.to_a #=> [[1, "a"], [2, "b"], [3, "c"]]
> a.to_a #=> [[1, "d"], [2, "e"], [3, "f"]]
>
> I believe that is not the desired behavior here and a.to_a should always return the same value.
I agree that the current behavior is confusing, and the attached patch fixes it in the above case, but the patch cannot fix it in the following case:
a = (1..3).lazy.zip('a'..'z').map {|i| i.join(":")}
p a.to_a #=> ["1:a", "2:b", "3:c"]
p a.to_a #=> ["1:d", "2:e", "3:f"]
It may be difficult to fix it without performance decrease.
We have three options:
(1) Keep the current behavior.
(2) Rewind enumerators only when to_a is directly invoked on the lazy enumerator returned by lazy.zip.
(3) Rewind enumerators even if to_a is invoked on a chained enumerator. This may cause performance decrease.
----------------------------------------
Bug #6142: Enumerable::Lazy#zip doesn't rewind internal enumerators
https://bugs.ruby-lang.org/issues/6142#change-24623
Author: Innokenty Mikhailov
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 2.0.0dev (2012-03-14 trunk 35013) [x86_64-linux]
All enumerables passed to Enumerable::Lazy#zip are converted into lazy enumerators.
When result evaluated - ruby iterates over this enumerators while calling #next to retrieve the next value.
But those enumerators are not rewinded:
a = (1..3).lazy.zip('a'..'z')
a.to_a #=> [[1, "a"], [2, "b"], [3, "c"]]
a.to_a #=> [[1, "d"], [2, "e"], [3, "f"]]
I believe that is not the desired behavior here and a.to_a should always return the same value.
--
http://bugs.ruby-lang.org/