# Ruby

**URL:** https://www.ruby-forum.com/c/ruby/7.md?page=938

[Latest](https://www.ruby-forum.com/latest.md) · [Categories](https://www.ruby-forum.com/categories.md) · [Tags](https://www.ruby-forum.com/tags.md)

**Page:** 939

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## [\[Bug #913\] mathn $B$7$?\>l9g!"(Bsqrt(NaN) $B$,J#AG?t$K$J$k(B](https://www.ruby-forum.com/t/bug-913-mathn-b-7-l9g-bsqrt-nan-b-j-ag-t-k-j-k-b/156169)

<div class="topic-metadata">

**Author:** [@Yuki\_S](https://www.ruby-forum.com/u/Yuki_S)\
**Replies:** 3\
**Last updated:** [December 23, 2008, 7:29am UTC](https://www.ruby-forum.com/t/bug-913-mathn-b-7-l9g-bsqrt-nan-b-j-ag-t-k-j-k-b/156169 "2008-12-23T07:29:46Z")

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e$B%A%1%C%He(B #913 e$B$,99?7$5$l$^$7$?!#e(B (by Yuki S.) e$B$?$V$s!"$3$s$J46$8$@$H;W$$$^$9!#%3%\_%C%H$7$F$h$$$G$9$+e(B? \< e$B@PDM$5$se(B diff --git a/lib/mathn.rb b/lib/mathn.rb index 48cb99f…0241f57 100644 — a/lib/…

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## [Fail to complie ext pty in cygwin](https://www.ruby-forum.com/t/fail-to-complie-ext-pty-in-cygwin/156225)

<div class="topic-metadata">

**Author:** [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Replies:** 3\
**Last updated:** [December 23, 2008, 6:33am UTC](https://www.ruby-forum.com/t/fail-to-complie-ext-pty-in-cygwin/156225 "2008-12-23T06:33:05Z")

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e$B=uED$G$9!#e(B e$BJs9p$@$1$G$9!#e(B Cygwin e$B$Ge(B ruby\_1\_9\_1 e$B$r%3%s%Q%$%k$9$k$He(B ext/pty e$B$N%3%s%Q%$%k$K\<:GT$7$^$9!#e(B pty e$B$C$F$=$b$=$be(BCygwine$B$G$bF0$/$N$+$I$&$+$o$+$j$^$;$s$,e(B… /home/svn/ruby/br…

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## [Doc on JNDI / Rails 2.2](https://www.ruby-forum.com/t/doc-on-jndi-rails-2-2/156217)

<div class="topic-metadata">

**Author:** [@ADADAD](https://www.ruby-forum.com/u/ADADAD)\
**Replies:** 4\
**Last updated:** [December 23, 2008, 6:26am UTC](https://www.ruby-forum.com/t/doc-on-jndi-rails-2-2/156217 "2008-12-23T06:26:39Z")

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is there a cohesive doc on using Rails 2.2 with JNDI connection pooling and how it is used in conjunction with the new activereord-jdbc gem ? From the changelog it seems you can simply use jndi line in the database.y…

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## [Warbler 0.9.12 on MRI not copying gems?](https://www.ruby-forum.com/t/warbler-0-9-12-on-mri-not-copying-gems/156194)

<div class="topic-metadata">

**Author:** [@ghoti143](https://www.ruby-forum.com/u/ghoti143)\
**Replies:** 3\
**Last updated:** [December 23, 2008, 5:25am UTC](https://www.ruby-forum.com/t/warbler-0-9-12-on-mri-not-copying-gems/156194 "2008-12-23T05:25:51Z")

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One of our build environments uses MRI. On JRuby, Warbler 0.9.12 is working fine & copying in gems to: tmp/war/WEB-INF/gems But for some reason MRI is not. warble runs without error, but there is no tmp/war/WEB-INF/g…

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## [Why Ruby stops working under cygwin](https://www.ruby-forum.com/t/why-ruby-stops-working-under-cygwin/156147)

<div class="topic-metadata">

**Author:** [@alex-osu3](https://www.ruby-forum.com/u/alex-osu3)\
**Replies:** 4\
**Last updated:** [December 23, 2008, 5:10am UTC](https://www.ruby-forum.com/t/why-ruby-stops-working-under-cygwin/156147 "2008-12-23T05:10:39Z")

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Hi all, I want to call voice function using win32ole under cygwin. But Ruby always stops working and a new window pops up the error message. I wonder how to fix it. Thanks, Li $ irb irb(main):001:0\> require ‘win32…

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## [Mkmf creates broken makefile (Windows)](https://www.ruby-forum.com/t/mkmf-creates-broken-makefile-windows/156156)

<div class="topic-metadata">

**Author:** [@ZippySwish](https://www.ruby-forum.com/u/ZippySwish)\
**Replies:** 2\
**Last updated:** [December 23, 2008, 2:25am UTC](https://www.ruby-forum.com/t/mkmf-creates-broken-makefile-windows/156156 "2008-12-23T02:25:47Z")

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Hi! I’m trying to compile the ruby whirlpool library from http://izumi.plan99.net/blog/index.php/ruby-whirlpool-library/ on windows with Cygwin. extconf.rb looks like this: require ‘mkmf’ dir\_config(‘whirlpool’) c…

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## [\[HowTo\] immediate "sendkeys" with Ruby ? (SketchUp)](https://www.ruby-forum.com/t/howto-immediate-sendkeys-with-ruby-sketchup/156164)

<div class="topic-metadata">

**Author:** [@marcioab](https://www.ruby-forum.com/u/marcioab)\
**Replies:** 2\
**Last updated:** [December 23, 2008, 2:08am UTC](https://www.ruby-forum.com/t/howto-immediate-sendkeys-with-ruby-sketchup/156164 "2008-12-23T02:08:41Z")

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I need to send a key (letter “x” for example) to SketchUp (shortcut) in the middle of a code execution. I’m trying to use the command: WIN32OLE.new(“WScript.Shell”).SendKeys(“x”) But this way, the “x” is not being sen…

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## [Fail to make mingw ruby (ruby\_1\_9\_1) in Cygwin](https://www.ruby-forum.com/t/fail-to-make-mingw-ruby-ruby-1-9-1-in-cygwin/156228)

<div class="topic-metadata">

**Author:** [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Replies:** 0\
**Last updated:** [December 23, 2008, 1:31am UTC](https://www.ruby-forum.com/t/fail-to-make-mingw-ruby-ruby-1-9-1-in-cygwin/156228 "2008-12-23T01:31:57Z")

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e$B=uED$G$9!#e(B e$B$^$?$^$?Js9p$@$1$G$9!#e(B Cygwine$B$N4D6-$G!"e(BCC=‘gcc -mno-cygwin’ e$B$Ge(B mingwe$BHGe(B Ruby e$B$re(B make e$B$7$h$&$H$9$k$HESCf$G\<:GT$7$^$9!#e(B miniruby.exe e$B$O$G$-$F$^$9!#e(B ruby\_1\_9\_1…

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## [Last revision not found](https://www.ruby-forum.com/t/last-revision-not-found/156223)

<div class="topic-metadata">

**Author:** [@Masaki\_S](https://www.ruby-forum.com/u/Masaki_S)\
**Replies:** 0\
**Last updated:** [December 22, 2008, 10:56pm UTC](https://www.ruby-forum.com/t/last-revision-not-found/156223 "2008-12-22T22:56:08Z")

</div>

e$B=uED$G$9!#e(B e$BJs9p$@$1$G$9!#e(B e$B$7$P$i$/e(BRubye$B$r%3%s%Q%$%k$7$F$J$+$C$?$N$G!"e(B e$B$$$D$+$i$+$o$+$i$J$$$N$G$9$,!"e(B trunke$B$Ge(Bmakee$B$9$k$He(B file2lastrev.rb e$B$G\<:GT$7$^$9!#e(B Cygwin e$B4D6-$G$9…

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## [LibXML::XML to json in ruby](https://www.ruby-forum.com/t/libxml-xml-to-json-in-ruby/156205)

<div class="topic-metadata">

**Author:** [@victor](https://www.ruby-forum.com/u/victor)\
**Replies:** 1\
**Last updated:** [December 22, 2008, 10:35pm UTC](https://www.ruby-forum.com/t/libxml-xml-to-json-in-ruby/156205 "2008-12-22T22:35:37Z")

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Hi Does anyone aware of any ruby code, gem or plugin available to convert LibXML::XML object to json? Thanks in advance, Victor

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## [Announcing Revactor: an Actor model implementation for Ruby 1.9](https://www.ruby-forum.com/t/announcing-revactor-an-actor-model-implementation-for-ruby-1-9/126666)

<div class="topic-metadata">

**Author:** [@murfhy](https://www.ruby-forum.com/u/murfhy)\
**Replies:** 24\
**Last updated:** [December 22, 2008, 9:11pm UTC](https://www.ruby-forum.com/t/announcing-revactor-an-actor-model-implementation-for-ruby-1-9/126666 "2008-12-22T21:11:48Z")

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I’m pleased to announce the initial public availability of Revactor, an Actor framework for Ruby 1.9. The Actor model has seen increasing popularity in languages like Erlang and Scala. Revactor adds asynchronous messa…

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## [Warbler-rack timeout q / circuit breaker](https://www.ruby-forum.com/t/warbler-rack-timeout-q-circuit-breaker/156141)

<div class="topic-metadata">

**Author:** [@ghoti143](https://www.ruby-forum.com/u/ghoti143)\
**Replies:** 4\
**Last updated:** [December 22, 2008, 6:53pm UTC](https://www.ruby-forum.com/t/warbler-rack-timeout-q-circuit-breaker/156141 "2008-12-22T18:53:48Z")

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I just upgraded to latest warbler/rack (0.9.12/0.9.3). I’ll do some testing on it, but wanted to run something past you … On our last round of load testing we saw our app, TriSano go into a predictable death spiral on…

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## [Dreaming of a Ruby Christmas (#187)](https://www.ruby-forum.com/t/dreaming-of-a-ruby-christmas-187/156059)

<div class="topic-metadata">

**Author:** [@mansfiem](https://www.ruby-forum.com/u/mansfiem)\
**Replies:** 10\
**Last updated:** [December 22, 2008, 6:53pm UTC](https://www.ruby-forum.com/t/dreaming-of-a-ruby-christmas-187/156059 "2008-12-22T18:53:13Z")

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\-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- The three rules of Ruby Q. 2: … no rules this week! … Suggestion: A \[QUIZ\] in the subject of emails about the problem helps everyone on Ruby T. f…

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## [Rails 2.2 sweeping error](https://www.ruby-forum.com/t/rails-2-2-sweeping-error/156203)

<div class="topic-metadata">

**Author:** [@ADADAD](https://www.ruby-forum.com/u/ADADAD)\
**Replies:** 0\
**Last updated:** [December 22, 2008, 6:51pm UTC](https://www.ruby-forum.com/t/rails-2-2-sweeping-error/156203 "2008-12-22T18:51:28Z")

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Hello, I posted this on the rails forum , but since I am running Jruby 1.1.6 figured i would post here. When using cache sweeping with rails 2.2 i am seeing the following error A NoMethodError occurred in content#i…

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## [Ruby Best Practices contest extended](https://www.ruby-forum.com/t/ruby-best-practices-contest-extended/156198)

<div class="topic-metadata">

**Author:** [@pat\_eyler](https://www.ruby-forum.com/u/pat_eyler)\
**Replies:** 0\
**Last updated:** [December 22, 2008, 5:57pm UTC](https://www.ruby-forum.com/t/ruby-best-practices-contest-extended/156198 "2008-12-22T17:57:25Z")

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Due to the holiday press, Gregory and I will not be able to judge this until early 2009. That means everyone has an extra two weeks or so to submit an entry. We’ll close up submissions on Jan 9, and announce the awa…

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## [Get first and last line from txt file - how?](https://www.ruby-forum.com/t/get-first-and-last-line-from-txt-file-how/156096)

<div class="topic-metadata">

**Author:** [@mmcolli00](https://www.ruby-forum.com/u/mmcolli00)\
**Replies:** 18\
**Last updated:** [December 22, 2008, 5:11pm UTC](https://www.ruby-forum.com/t/get-first-and-last-line-from-txt-file-how/156096 "2008-12-22T17:11:01Z")

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I have txt file with date/time stamps only. I want to grab the first date/time and the last date/time. For instance, I will be needing 08/09/08 3:00 and 08/24/08 3:00 from the below queued.txt. Do you know how I can p…

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## [Cannot call EJBs 3.0 from the JRuby script](https://www.ruby-forum.com/t/cannot-call-ejbs-3-0-from-the-jruby-script/156016)

<div class="topic-metadata">

**Author:** [@eipipuz](https://www.ruby-forum.com/u/eipipuz)\
**Replies:** 5\
**Last updated:** [December 22, 2008, 3:39pm UTC](https://www.ruby-forum.com/t/cannot-call-ejbs-3-0-from-the-jruby-script/156016 "2008-12-22T15:39:33Z")

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Hello guys, I am following the instructions in the book JRuby on Rails in the “chapter 9 - A JRuby enterpise Bean” and I am getting a strange error. I have glassfish correctly installed and working. I am using Eclipse …

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## [RbFind 1.1](https://www.ruby-forum.com/t/rbfind-1-1/155984)

<div class="topic-metadata">

**Author:** [@Bertram\_S](https://www.ruby-forum.com/u/Bertram_S)\
**Replies:** 4\
**Last updated:** [December 22, 2008, 3:08pm UTC](https://www.ruby-forum.com/t/rbfind-1-1/155984 "2008-12-22T15:08:57Z")

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Hi, yet another find tool: http://raa.ruby-lang.org/project/rbfind. Hope you enjoy it. Seek and ye shall find. Bertram

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## [\[Bug #914\] Integer#upto(NaN)](https://www.ruby-forum.com/t/bug-914-integer-upto-nan/156132)

<div class="topic-metadata">

**Author:** [@tadayoshi\_funaba](https://www.ruby-forum.com/u/tadayoshi_funaba)\
**Replies:** 4\
**Last updated:** [December 22, 2008, 1:20pm UTC](https://www.ruby-forum.com/t/bug-914-integer-upto-nan/156132 "2008-12-22T13:20:27Z")

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Bug #914: Integer#upto(NaN) http://redmine.ruby-lang.org/issues/show/914 e$B5/I\<\<Te(B: tadayoshi funaba e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal upto(NaN) e$B$de(B downto(NaN) e$B$G\<B\<AE\*$KL58B%k!\<%W$K$J$k$h$&$G…

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## [Paginate](https://www.ruby-forum.com/t/paginate/156179)

<div class="topic-metadata">

**Author:** [@samatha](https://www.ruby-forum.com/u/samatha)\
**Replies:** 4\
**Last updated:** [December 22, 2008, 1:18pm UTC](https://www.ruby-forum.com/t/paginate/156179 "2008-12-22T13:18:41Z")

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Hi am facing a problem in my programme the error is “undefined method \`paginate’ for #ManageController:0x4b4252c” how to solve this Thanx and Regards Samatha

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## [Using ruby hash on array](https://www.ruby-forum.com/t/using-ruby-hash-on-array/155889)

<div class="topic-metadata">

**Author:** [@sclarke](https://www.ruby-forum.com/u/sclarke)\
**Replies:** 13\
**Last updated:** [December 22, 2008, 11:29am UTC](https://www.ruby-forum.com/t/using-ruby-hash-on-array/155889 "2008-12-22T11:29:05Z")

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I would like to process some data from an array and using hash to perform a count on one aspect of the data in the array. The array holds lines of similarly formatted data like so data A data B data C dat…

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## [Ftp](https://www.ruby-forum.com/t/ftp/156073)

<div class="topic-metadata">

**Author:** [@pratstercs](https://www.ruby-forum.com/u/pratstercs)\
**Replies:** 4\
**Last updated:** [December 22, 2008, 11:22am UTC](https://www.ruby-forum.com/t/ftp/156073 "2008-12-22T11:22:57Z")

</div>

Hi, I’m a complete novice to Ruby, but I would like to write an FTP server to collect the files from my computer (internet connected) and copy them to my server nightly. My server is a Ubuntu Linux setup with FTP and …

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## [DBI:ODBC on Vista: "could not load driver"](https://www.ruby-forum.com/t/dbi-odbc-on-vista-could-not-load-driver/156064)

<div class="topic-metadata">

**Author:** [@gordonm](https://www.ruby-forum.com/u/gordonm)\
**Replies:** 1\
**Last updated:** [December 22, 2008, 9:48am UTC](https://www.ruby-forum.com/t/dbi-odbc-on-vista-could-not-load-driver/156064 "2008-12-22T09:48:47Z")

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The following code, run from NetBeans IDE on Vista SP1 Home Edition: p require(‘dbi’) p require(‘odbc’) p DBI.available\_drivers dbh= DBI.connect(‘dbi:ODBC:cookbook’,‘root’) Produces: true true \[“dbi:Proxy:”, “dbi…

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## [Garbage collector segmentation fault](https://www.ruby-forum.com/t/garbage-collector-segmentation-fault/152649)

<div class="topic-metadata">

**Author:** [@cubiq](https://www.ruby-forum.com/u/cubiq)\
**Replies:** 7\
**Last updated:** [December 22, 2008, 9:48am UTC](https://www.ruby-forum.com/t/garbage-collector-segmentation-fault/152649 "2008-12-22T09:48:46Z")

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Hello list, I get this every now and then when running some ruby / c++ methods from within rails. It looks like ruby’s garbage collector once again makes bad decisions… Program received signal SIGSEGV, Segmentation f…

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## [ERROR: no driver for sqlite3 found (Ruby 1.9.0 + Windows)](https://www.ruby-forum.com/t/error-no-driver-for-sqlite3-found-ruby-1-9-0-windows/156143)

<div class="topic-metadata">

**Author:** [@nachocab](https://www.ruby-forum.com/u/nachocab)\
**Replies:** 1\
**Last updated:** [December 22, 2008, 9:45am UTC](https://www.ruby-forum.com/t/error-no-driver-for-sqlite3-found-ruby-1-9-0-windows/156143 "2008-12-22T09:45:38Z")

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Hi everyone, I’m getting this error after I upgraded Ruby from 1.8 to 1.9.0 and it’s driving me crazy: “no driver for sqlite3 found” If I do an irb: irb(main):001:0\> require ‘sqlite3’ =\> true irb(main):002:0\> SQLi…

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## [Ruby$B3+H/%\_!\<%F%#%s%0%m%0(B](https://www.ruby-forum.com/t/ruby-b3-h-f-s-0-m-0-b/155368)

<div class="topic-metadata">

**Author:** [@SASADA\_Koichi](https://www.ruby-forum.com/u/SASADA_Koichi)\
**Replies:** 7\
**Last updated:** [December 22, 2008, 9:33am UTC](https://www.ruby-forum.com/t/ruby-b3-h-f-s-0-m-0-b/155368 "2008-12-22T09:33:31Z")

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e$B!!$5$5$@$G$9!%e(B e$B!!;22C$G$-$=$&$J?M$K@\<$r$+$1$F!$e(BRubye$B3+H/%\_!\<%F%#%s%0$r3+$-$^$7$?!%%a%b$re(B e$B$\*Aw$j$7$^$9!%e(B Rubye$B3+H/%\_!\<%F%#%s%0e(B e$B\>l=j!’=)MU86e(B e$BF|;~!'e(B2008/12/11 9:00-12:30 e$B;22C\<…

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## [Haml to erb](https://www.ruby-forum.com/t/haml-to-erb/156177)

<div class="topic-metadata">

**Author:** [@thaniyarasu](https://www.ruby-forum.com/u/thaniyarasu)\
**Replies:** 1\
**Last updated:** [December 22, 2008, 7:12am UTC](https://www.ruby-forum.com/t/haml-to-erb/156177 "2008-12-22T07:12:55Z")

</div>

i have lot of haml file i want to convert all files to erb files any idea ?

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## [Ruby $B3+H/\<T%\_!\<%F%#%s%0%m%0(B](https://www.ruby-forum.com/t/ruby-b3-h-t-f-s-0-m-0-b/156174)

<div class="topic-metadata">

**Author:** [@SASADA\_Koichi](https://www.ruby-forum.com/u/SASADA_Koichi)\
**Replies:** 0\
**Last updated:** [December 22, 2008, 5:05am UTC](https://www.ruby-forum.com/t/ruby-b3-h-t-f-s-0-m-0-b/156174 "2008-12-22T05:05:39Z")

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e$B!!$5$5$@$G$9!%e(B e$B!!e(BRubye$B3+H/\<T%\_!\<%F%#%s%0$r$F$-$H$&$K3+$$$?$N$G%m%0$r$\*Aw$j$7$^$9!%e(B Rubye$B3+H/\<T%\_!\<%F%#%s%0e(B e$BF|;~!‘e(B2008/12/22 10:10- e$B\>l=j!’=)MU86e(B e$B=P@J!'e(Bmatz, yugui, akr, ko1, no…

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## [\[Bug #854\](Closed) Rake::FileList#egrep $B$,F0$+$J$$(B](https://www.ruby-forum.com/t/bug-854-closed-rake-filelist-egrep-b-f0-j-b/156171)

<div class="topic-metadata">

**Author:** [@Yukihiro\_M](https://www.ruby-forum.com/u/Yukihiro_M)\
**Replies:** 0\
**Last updated:** [December 22, 2008, 4:30am UTC](https://www.ruby-forum.com/t/bug-854-closed-rake-filelist-egrep-b-f0-j-b/156171 "2008-12-22T04:30:34Z")

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e$B%A%1%C%He(B #854 e$B$,99?7$5$l$^$7$?!#e(B (by Yukihiro M.) e$B%9%F!\<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B fixed by r20908. http://redmine.ruby-lang.org/issues/show/854

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## [String#upto](https://www.ruby-forum.com/t/string-upto/156135)

<div class="topic-metadata">

**Author:** [@Tadayoshi\_F](https://www.ruby-forum.com/u/Tadayoshi_F)\
**Replies:** 1\
**Last updated:** [December 22, 2008, 4:24am UTC](https://www.ruby-forum.com/t/string-upto/156135 "2008-12-22T04:24:08Z")

</div>

e$B$J$s$H$J$/!“e(BString#upto e$B$be(B Integer e$B$N$=$l$HF1$8$/!”%V%m%C%/$,$J$$\>l9g$Oe(B Enumerator e$B$rJV$9$b$N$H;W$C$F$$$?$N$G$9$,!"$=$&$G$O$J$$$N$G$9$M!#e(B e$B$3$l$O2?$+$=$&=PMh$J$$M}M3$,$"$k$N$G$7$g$&$+!#e(B

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