[#22637] [Bug #1240] parser bug in 1.8.7 and 1.9.1p0 — Thomer Gil <redmine@...>
Bug #1240: parser bug in 1.8.7 and 1.9.1p0
Issue #1240 has been updated by Yusuke Endoh.
[#22640] [Bug #1241] Segfault with Nokogiri 1.2.1 on Ruby 1.9.1p0 — Raven Ex <redmine@...>
Bug #1241: Segfault with Nokogiri 1.2.1 on Ruby 1.9.1p0
[#22646] [Bug #1243] 1 is prime — Yuki Sonoda <redmine@...>
Bug #1243: 1 is prime
Issue #1243 has been updated by Dave B.
[#22684] [Bug #1247] YAML::load converts some dates into strings — Matthew Wilson <redmine@...>
Bug #1247: YAML::load converts some dates into strings
Issue #1247 has been updated by Yusuke Endoh.
On Thu, Apr 08, 2010 at 10:22:57PM +0900, Yusuke Endoh wrote:
On 4/8/10, Aaron Patterson <aaron@tenderlovemaking.com> wrote:
Hi,
[#22685] 1.9 conditional wait has no timeout support — Nasir Khan <rubylearner@...>
In ruby 1.8 we could use -
[#22687] [Bug #1248] e.exception(e) returns self — Tomas Matousek <redmine@...>
Bug #1248: e.exception(e) returns self
Hi,
Well the reason is that arg is supposed to be a message, right? A message can be an arbitrary object. So if I pass e as a message, why it doesn't become a value of the message property?
Hi,
[#22715] [Bug #1251] gsub problem — Alexander Pettelkau <redmine@...>
Bug #1251: gsub problem
[#22725] [Bug #1253] Fix MSVC Build Issues — Charlie Savage <redmine@...>
Bug #1253: Fix MSVC Build Issues
[#22727] Moving ruby 1.9.1 forward on windows — Charlie Savage <cfis@...>
Hi everyone,
On Sat, Mar 7, 2009 at 7:01 PM, Charlie Savage <cfis@savagexi.com> wrote:
> This works until you start linking third-party upstream source that
On Sun, Mar 8, 2009 at 3:45 PM, Charlie Savage <cfis@savagexi.com> wrote:
Hi Austin,
On Sun, Mar 8, 2009 at 4:26 PM, Charlie Savage <cfis@savagexi.com> wrote:
[#22731] [Bug #1255] += for large strings egrigiously slow — James Lee <redmine@...>
Bug #1255: += for large strings egrigiously slow
[#22736] Ruby 1.9.1 and tail recursion optimization — =?ISO-8859-15?Q?Wolfgang_N=E1dasi-Donner?= <ed.odanow@...>
Moin, moin!
Wolfgang N疆asi-Donner schrieb:
Hi,
>
On Sun, Mar 8, 2009 at 16:57, James Coglan <jcoglan@googlemail.com> wrote:
2009/3/8 Nikolai Weibull <now@bitwi.se>
James Coglan wrote:
daz schrieb:
Wolfgang N叩dasi-Donner wrote:
Charles Oliver Nutter schrieb:
[#22748] [Feature #1256] Add constant TAILRECURSION to let a program recognize if tail recursion optimization is implemented — Wolfgang Nádasi-Donner <redmine@...>
Feature #1256: Add constant TAILRECURSION to let a program recognize if tail recursion optimization is implemented
Hi,
[#22803] Relegate 1.8.6 to Engine Yard, part II — Urabe Shyouhei <shyouhei@...>
Hello and sorry for my being slow for this issue. It's OK now for me to pass
Ryan Davis wrote:
Urabe Shyouhei wrote:
Hi,
Nobuyoshi Nakada wrote:
Urabe Shyouhei wrote:
[#22812] [Bug #1261] cross-compiling Ruby extensions using mkmf doesn't fully respect DESTDIR — Daniel Golle <redmine@...>
Bug #1261: cross-compiling Ruby extensions using mkmf doesn't fully respect DESTDIR
[#22859] [Bug #1277] Incorrect passing of file handle between runtime libraries in OpenSSL extension — Charlie Savage <redmine@...>
Bug #1277: Incorrect passing of file handle between runtime libraries in OpenSSL extension
[#22892] Ruby Time — valodzka <valodzka@...>
Got tired of current ruby Time limitation, I have written this -
In article <9e19ed87-9d12-4f98-af3c-bd49a71b0bd4@p11g2000yqe.googlegroups.com>,
valodzka wrote:
> I bet you'll get tired of updating that database. There's a major difference
valodzka wrote:
In article <b5d0a489-4613-4b63-9664-8627358b2dd9@g19g2000yql.googlegroups.com>,
> I found a discussion in PHP.
In article <deab6882-12ac-4aa1-a901-681795ed863b@z9g2000yqi.googlegroups.com>,
[#22893] [Feature #1291] O_CLOEXEC flag missing for Kernel::open — David Martin <redmine@...>
Feature #1291: O_CLOEXEC flag missing for Kernel::open
Issue #1291 has been updated by Motohiro KOSAKI.
[#22894] [Bug #1292] 1.8 compile time error with mingw gcc 4.3 — Roger Pack <redmine@...>
Bug #1292: 1.8 compile time error with mingw gcc 4.3
Hi,
[#22916] [Bug #1296] [trunk/22981] 64-bit issues on trunk in ext/zlib — Ollivier Robert <redmine@...>
Bug #1296: [trunk/22981] 64-bit issues on trunk in ext/zlib
[#22927] [Bug #1301] Poor RegExp Matching Performance — Andreas Grau <redmine@...>
Bug #1301: Poor RegExp Matching Performance
[#22935] 1.8.6 rdoc breaks when rdoc'ing 1.9 — James Britt <james.britt@...>
I'm running ruby 1.8.6 (2009-03-10 patchlevel 362) [i686-linux] and
[#22937] Ruby not to be a part of Google's 2009 Summer of Code? — Rocky Bernstein <rocky.bernstein@...>
The list of participating organizations for Google's 2009 Summer of Code has
[#22978] Ruby 1.9 bloc parameters — Vincent Isambart <vincent.isambart@...>
Hi,
[#22979] Ruby 1.9 bloc parameters — Vincent Isambart <vincent.isambart@...>
Hi,
[#22990] [Bug #1309] dl tests — Charlie Savage <redmine@...>
Bug #1309: dl tests
[#23026] [Bug #1317] Creating a range with strings — Ian Bailey <redmine@...>
Bug #1317: Creating a range with strings
[#23050] [Bug #1322] define_method scope bug — "coderrr ." <redmine@...>
Bug #1322: define_method scope bug
[#23051] [Bug #1323] Sockets broken on windows — Charlie Savage <redmine@...>
Bug #1323: Sockets broken on windows
[#23053] [Bug #1325] fiber tests kill windows — Charlie Savage <redmine@...>
Bug #1325: fiber tests kill windows
[#23054] [Bug #1326] Failing unit tests on windows — Charlie Savage <redmine@...>
Bug #1326: Failing unit tests on windows
[#23060] [Bug #1327] CSV unit test failures on windows — Charlie Savage <redmine@...>
Bug #1327: CSV unit test failures on windows
[#23063] [Bug #1332] Reading file on Windows is 500x slower then with previous Ruby version — Damjan Rems <redmine@...>
Bug #1332: Reading file on Windows is 500x slower then with previous Ruby version
Issue #1332 has been updated by Roger Pack.
Hello,
[#23075] [Bug #1336] Change in string representation of Floats — Brian Ford <redmine@...>
Bug #1336: Change in string representation of Floats
Issue #1336 has been updated by Roger Pack.
On Fri, Apr 3, 2009 at 11:49 PM, Roger Pack <redmine@ruby-lang.org> wrote:
Issue #1336 has been updated by Roger Pack.
Hi,
Hi,
Hi,
Gary Wright wrote:
[#23082] [Bug #1341] pthread_cond_timedwait failing in 1.9.1-p0 thread tests — Graham Agnew <redmine@...>
Bug #1341: pthread_cond_timedwait failing in 1.9.1-p0 thread tests
[ruby-core:22936] Re: [Bug #1301] Poor RegExp Matching Performance
At 23:53 09/03/18, Andreas Grau wrote: >Bug #1301: Poor RegExp Matching Performance >http://redmine.ruby-lang.org/issues/show/1301 > >Author: Andreas Grau >Status: Open, Priority: Normal >Category: core >ruby -v: 1.9.0 (2008-06-20 revision 17482) [i486-linux] > >I noticed a very poor performance on matching regular expressions. > >Running following code using ruby 1.9.0 on a Core2Duo (2x2Ghz) takes more >than 20s to complete. > >regexp = /[b]+.+.+.+.+.+.+.+.+[a]/ Eero gave a much better way to write this regexp. But why is it so bad, in particular for the string below? The string has 37 'b's, and you are asking it to try all different ways it can be split into nine non-empty substrings (the first of which has to consist of 'b's only), followed by an [a]. It's surprising that this only takes 23 seconds! Theory about regular expressions (formal language theory) says there shouldn't be any difference, but Ruby regular expressions (same for Perl, Python, and so on) are not really regular expressions in the formal sense anymore, because they allow capturing and many more neat practical things. So the implementation uses backtracking, and your regexp above creates a lot of backtracking. For details on how to write good regular expressions, please see Jeffrey Friedl's book (e.g. at http://www.amazon.com/Mastering-Regular-Expressions-Jeffrey-Friedl/dp/0596528124/) BTW, the [] in the above expression are not necessary, it would usually be written regexp = /b+.+.+.+.+.+.+.+.+a/ Regards, Martin. >str="bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" >regexp.match(str) > >$ time ruby1.9 test.rb > >real 0m23.029s >user 0m22.421s >sys 0m0.012s > > >---------------------------------------- >http://redmine.ruby-lang.org #-#-# Martin J. Du"rst, Assoc. Professor, Aoyama Gakuin University #-#-# http://www.sw.it.aoyama.ac.jp mailto:duerst@it.aoyama.ac.jp