# Latest **URL:** https://www.ruby-forum.com/latest.md?page=546 [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:** 547 --- ## [Empty work functions](https://www.ruby-forum.com/t/empty-work-functions/236458)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 1\ **Last updated:** [September 5, 2013, 10:08am UTC](https://www.ruby-forum.com/t/empty-work-functions/236458 "2013-09-05T10:08:33Z")
The implementation of the uhd\_control\_port block in gnuradio-extras has an empty work function because it doesn’t actually process any samples. I believe gnuradio-extras uses the gnuradio advanced scheduler (GRAS), so… --- ## [Ruby QR code decoder?](https://www.ruby-forum.com/t/ruby-qr-code-decoder/178255)
**Author:** [@ckundo](https://www.ruby-forum.com/u/ckundo)\ **Replies:** 8\ **Last updated:** [September 5, 2013, 9:06am UTC](https://www.ruby-forum.com/t/ruby-qr-code-decoder/178255 "2013-09-05T09:06:41Z")
I’d like to use be able to decode QR codes that people submit to my rails app. I’m using phonegap for iPhone, so I need to create a work- around for a native QR code reader. The best I can come up with is having someo… --- ## [RubyVM::InstructionSequence compile to a file and read from a file](https://www.ruby-forum.com/t/rubyvm-instructionsequence-compile-to-a-file-and-read-from-a-file/246143)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 5\ **Last updated:** [September 5, 2013, 8:36am UTC](https://www.ruby-forum.com/t/rubyvm-instructionsequence-compile-to-a-file-and-read-from-a-file/246143 "2013-09-05T08:36:50Z")
Hello. I used RubyVM::InstructionSequence to compile file test.rb and I used .to\_a function to save it to an array and Marshal.dump to dump the array to a file. Is the way to eval the sequence I have in the file ? Co… --- ## [Watir unable to locate element - please help](https://www.ruby-forum.com/t/watir-unable-to-locate-element-please-help/236378)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 11\ **Last updated:** [September 5, 2013, 8:15am UTC](https://www.ruby-forum.com/t/watir-unable-to-locate-element-please-help/236378 "2013-09-05T08:15:38Z")
Hi, I have a watir test script that is failing with the error: Unable to locate element, using {:class"someclass", :text=\>“2”} The weird thing is that when I look at the page source I see that indeed there is no clas… --- ## [Linkedin gem](https://www.ruby-forum.com/t/linkedin-gem/236371)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 4\ **Last updated:** [September 5, 2013, 7:57am UTC](https://www.ruby-forum.com/t/linkedin-gem/236371 "2013-09-05T07:57:07Z")
Hi, I am following this post \* Ruby Social Gems: LinkedIn — SitePoint\* for using linked gem and API for getting profile and other stuff But at the end I am getting this error: =\> Booting WEBrick =\> Rails 3.2.13 a… --- ## [Hw to create binary tree structure in rails](https://www.ruby-forum.com/t/hw-to-create-binary-tree-structure-in-rails/236465)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [September 5, 2013, 7:47am UTC](https://www.ruby-forum.com/t/hw-to-create-binary-tree-structure-in-rails/236465 "2013-09-05T07:47:09Z")
hello friends, i want to create a binary tree structure in railsapps.it there any gem or any other technique. --- ## [Nginx : Reverse Proxy + Redis](https://www.ruby-forum.com/t/nginx-reverse-proxy-redis/236463)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [September 5, 2013, 7:27am UTC](https://www.ruby-forum.com/t/nginx-reverse-proxy-redis/236463 "2013-09-05T07:27:40Z")
Hi, I have an existing Nginx setup up and running to get an reverse proxy working with caching support(Nginx InMemory). I have integrated it with LUA to get some customizations for changing request as per some biz ru… --- ## [Heroku reacher 5 free apps showing varify your account message](https://www.ruby-forum.com/t/heroku-reacher-5-free-apps-showing-varify-your-account-message/236462)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 1\ **Last updated:** [September 5, 2013, 7:23am UTC](https://www.ruby-forum.com/t/heroku-reacher-5-free-apps-showing-varify-your-account-message/236462 "2013-09-05T07:23:43Z")
hello developers, i am using heroku free account and i have deployed some apps. now when i create a new app with create heroku command. is shows a message “you reached limit of 5 free apps plz varify your account”. w… --- ## [Rubyアソシエーション2013年度助成金公募について](https://www.ruby-forum.com/t/ruby-2013/236464)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [September 5, 2013, 7:22am UTC](https://www.ruby-forum.com/t/ruby-2013/236464 "2013-09-05T07:22:33Z")
$BA0ED$G$9!#(B Ruby$B%“%=%7%(!\<%7%g%s$G$O!”(BRuby$B4XO"$N3+H/%W%m%8%'%/%H$KBP$7!"(B2013$BG/EY=u@.6b$N(B $B8xJg$r9T$C$F$$$^$9!#(B $B\>:Y$O0J2\<$N%5%$%H$r;2\>H$/$@$5$$!#(B 2013年度助成金公募 $B$\_$J$5$s$N$41~Jg$r$\*BT$A$7$F$$$^$9… --- ## [\[ANN\] Call for grant proposals](https://www.ruby-forum.com/t/ann-call-for-grant-proposals/236460)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [September 5, 2013, 7:16am UTC](https://www.ruby-forum.com/t/ann-call-for-grant-proposals/236460 "2013-09-05T07:16:42Z")
The Ruby Association is looking to give grants for development projects related to Ruby implementations, libraries and frameworks, including projects that improve existing software. See the following site for details. … --- ## [Speed up image processing of Paperclip in Acceptance Tests](https://www.ruby-forum.com/t/speed-up-image-processing-of-paperclip-in-acceptance-tests/246142)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 1\ **Last updated:** [September 5, 2013, 6:25am UTC](https://www.ruby-forum.com/t/speed-up-image-processing-of-paperclip-in-acceptance-tests/246142 "2013-09-05T06:25:17Z")
Hi All, I have a question here: How to Speed up image processing of Paperclip in Acceptance Tests When running capybara feature specs I can see lots of Slow factory notices which are populated byfactory\_girl. These … --- ## [Insufficient connected output ports](https://www.ruby-forum.com/t/insufficient-connected-output-ports/236440)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 2\ **Last updated:** [September 5, 2013, 6:21am UTC](https://www.ruby-forum.com/t/insufficient-connected-output-ports/236440 "2013-09-05T06:21:12Z")
I am sorry, the subject of previous post is wrong cause I solved that problem meanwhile, but I forgot to change it in the draft. --- ## [Set\_command\_time ack timeout issue](https://www.ruby-forum.com/t/set-command-time-ack-timeout-issue/246157)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 3\ **Last updated:** [September 5, 2013, 3:52am UTC](https://www.ruby-forum.com/t/set-command-time-ack-timeout-issue/246157 "2013-09-05T03:52:15Z")
I was wondering if anyone could give some insight into how the set\_command\_time() command handles the ack. I am having an issue where the system/thread locks waiting for an ACK from a set\_center\_freq() or if the set\_… --- ## [Enabling cpu #1 causes math error on ARM target](https://www.ruby-forum.com/t/enabling-cpu-1-causes-math-error-on-arm-target/236459)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 11:58pm UTC](https://www.ruby-forum.com/t/enabling-cpu-1-causes-math-error-on-arm-target/236459 "2013-09-04T23:58:53Z")
I wanted to post this observation to the group to see if I get a hit. I updated Bug #569 today with an additional observation: http://gnuradio.org/redmine/issues/569 Basically, on my ARM target, if I enable cpu core #… --- ## [Mailing Error](https://www.ruby-forum.com/t/mailing-error/236447)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 2\ **Last updated:** [September 4, 2013, 8:44pm UTC](https://www.ruby-forum.com/t/mailing-error/236447 "2013-09-04T20:44:52Z")
Hello All, I am not able to solve this problem. Net::SMTPAuthenticationError: 534-5.7.9 Please log in with your web browser and then try again. I am not getting this every time. I am getting this sometimes. What can … --- ## [Proxy buffering for media files?](https://www.ruby-forum.com/t/proxy-buffering-for-media-files/236437)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 8\ **Last updated:** [September 4, 2013, 6:41pm UTC](https://www.ruby-forum.com/t/proxy-buffering-for-media-files/236437 "2013-09-04T18:41:36Z")
I’m working on a configuration for an nginx proxy that splits requests between two upstream servers. The main reason I’m using a proxy is for SSL termination and for redundancy between the two upstream servers. Each … --- ## [Celluloid(::IO/ZMQ/DCell) 0.15: actor-based concurrent objects for Ruby](https://www.ruby-forum.com/t/celluloid-io-zmq-dcell-0-15-actor-based-concurrent-objects-for-ruby/236456)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 5:50pm UTC](https://www.ruby-forum.com/t/celluloid-io-zmq-dcell-0-15-actor-based-concurrent-objects-for-ruby/236456 "2013-09-04T17:50:46Z")
Celluloid is a concurrent object oriented programming framework for Ruby which lets you build multithreaded programs out of concurrent objects in a similar manner to how you build sequential programs out of plain old … --- ## [Shift from mongrel to webrick](https://www.ruby-forum.com/t/shift-from-mongrel-to-webrick/236455)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 7\ **Last updated:** [September 4, 2013, 5:02pm UTC](https://www.ruby-forum.com/t/shift-from-mongrel-to-webrick/236455 "2013-09-04T17:02:14Z")
Hi Everyone I have installed mongrel gem and in my dev I can able to run my app on mongrel but If I want to shift to webrick how can I shift easily with out uninstalling the mongrel gem Thanks in advance --- ## [3.6.4.2 test fail](https://www.ruby-forum.com/t/3-6-4-2-test-fail/246128)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 13\ **Last updated:** [September 4, 2013, 4:34pm UTC](https://www.ruby-forum.com/t/3-6-4-2-test-fail/246128 "2013-09-04T16:34:10Z")
Hi all guys, I am currently using 3.6.4git version of gnuradio at one of my computers. In order to use messages passing system from python i deceided to move to 3.6.4.2 but the test fails with following error: 182/… --- ## [Unable to rake db:create](https://www.ruby-forum.com/t/unable-to-rake-db-create/196352)
**Author:** [@premanshu](https://www.ruby-forum.com/u/premanshu)\ **Replies:** 16\ **Last updated:** [September 4, 2013, 4:04pm UTC](https://www.ruby-forum.com/t/unable-to-rake-db-create/196352 "2013-09-04T16:04:33Z")
I m using ruby 1.8.7 on rails 2.3.5 with mysql 5.0 on windows. C:\\Ruby187\\rails\\accounts\>rake db:create (in C:/Ruby187/rails/accounts) rake aborted! syntax error on line 2, col 0: \`encoding:utf8’ The following is th… --- ## [Radar application using UHD HELP](https://www.ruby-forum.com/t/radar-application-using-uhd-help/246186)
**Author:** [@Sadaf\_N](https://www.ruby-forum.com/u/Sadaf_N)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 3:32pm UTC](https://www.ruby-forum.com/t/radar-application-using-uhd-help/246186 "2013-09-04T15:32:11Z")
Hi there, I’m really new to USRP and GNURADIO world, so please you got to be patient. I have a few questions about UHD. I’ve successfully installed GnuRadio and UHD on Ubuntu 13.04 (wich i’m new too). I want to giv… --- ## [Could not open large files (KILL)](https://www.ruby-forum.com/t/could-not-open-large-files-kill/236454)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 1\ **Last updated:** [September 4, 2013, 3:08pm UTC](https://www.ruby-forum.com/t/could-not-open-large-files-kill/236454 "2013-09-04T15:08:13Z")
Dear All, I’m using USRP to capture data at certain interval of time and save the data in a file. I used the level() method of gr.probe\_signal\_vc and a vector length 1024 (samplelength). if the program is run for a sh… --- ## [Make test error](https://www.ruby-forum.com/t/make-test-error/225841)
**Author:** [@SSkonishi\_takurou\_S](https://www.ruby-forum.com/u/SSkonishi_takurou_S)\ **Replies:** 8\ **Last updated:** [September 4, 2013, 2:44pm UTC](https://www.ruby-forum.com/t/make-test-error/225841 "2013-09-04T14:44:15Z")
hello everyone, I try to install gnuradio by source code, the version is 3.6.3. my operation system is Ubuntu 12.04. and I get this error while running make test The following tests FAILED: 120 - qa\_ctcss\_squelch (F… --- ## [Before\_validate refactor question](https://www.ruby-forum.com/t/before-validate-refactor-question/236434)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 8\ **Last updated:** [September 4, 2013, 2:28pm UTC](https://www.ruby-forum.com/t/before-validate-refactor-question/236434 "2013-09-04T14:28:27Z")
Had this working until I refactored by putting into a hash and checking for blank. Now I get the error: undefined method \`key?’ for nil:NilClass. I’m still kind of new at this and would appreciate suggestions on wha… --- ## [Ricerca lavoro in Italia](https://www.ruby-forum.com/t/ricerca-lavoro-in-italia/246121)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 21\ **Last updated:** [September 4, 2013, 2:23pm UTC](https://www.ruby-forum.com/t/ricerca-lavoro-in-italia/246121 "2013-09-04T14:23:47Z")
Ho visto che sono passate in lista diverse proposte di lavoro, spero che la mia richiesta (al contrario) sia comunque gradita. http://returntoitaly.tumblr.com/ se conoscete qualcuno che corrisponda alla descrizione … --- ## [How good can USRPs with internal GPSDOs being synchronized?](https://www.ruby-forum.com/t/how-good-can-usrps-with-internal-gpsdos-being-synchronized/236450)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 1:58pm UTC](https://www.ruby-forum.com/t/how-good-can-usrps-with-internal-gpsdos-being-synchronized/236450 "2013-09-04T13:58:39Z")
Hi all, I am trying to synchronise two USRP N210 with the goal of receiving time-aligned samples. I’ve modified the rx\_samples\_to\_file.cpp code according to this page: http://files.ettus.com/uhd\_docs/manual/html/sync… --- ## [Fetching links to my rails app](https://www.ruby-forum.com/t/fetching-links-to-my-rails-app/246178)
**Author:** [@Rafa\_F](https://www.ruby-forum.com/u/Rafa_F)\ **Replies:** 1\ **Last updated:** [September 4, 2013, 1:10pm UTC](https://www.ruby-forum.com/t/fetching-links-to-my-rails-app/246178 "2013-09-04T13:10:23Z")
I am new to RoR and i want to fetch some links from some other websites to my rails app. How can i do so? --- ## [\[ANN\] Rapidfire 1.2.0 - Dynamic surveys in your rails app](https://www.ruby-forum.com/t/ann-rapidfire-1-2-0-dynamic-surveys-in-your-rails-app/236451)
**Author:** [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 12:33pm UTC](https://www.ruby-forum.com/t/ann-rapidfire-1-2-0-dynamic-surveys-in-your-rails-app/236451 "2013-09-04T12:33:19Z")
hi, A new version of rapidfire gem (v1.2.0) is released Rapidfire gem makes adding dynamic surveys very easy in your rails application. source: GitHub - code-mancers/rapidfire: Making dynamic surveys should be easy! … --- ## [My new block doesn't show up in GRC](https://www.ruby-forum.com/t/my-new-block-doesnt-show-up-in-grc/236408)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 1\ **Last updated:** [September 4, 2013, 11:31am UTC](https://www.ruby-forum.com/t/my-new-block-doesnt-show-up-in-grc/236408 "2013-09-04T11:31:08Z")
Hi everyone, So I am following the tutorial on making my own block: http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModules Everything is fine but I cant seem to find my block in GRC. It tested and instal… --- ## [S-maxage header](https://www.ruby-forum.com/t/s-maxage-header/236448)
**Author:** [@alcina](https://www.ruby-forum.com/u/alcina)\ **Replies:** 0\ **Last updated:** [September 4, 2013, 9:55am UTC](https://www.ruby-forum.com/t/s-maxage-header/236448 "2013-09-04T09:55:31Z")
Hi, What’s the easiest way to set the s-maxage header correctly? For example to set s-maxage to 365 days inside a location statement that matches images, JS and CSS files. This is needed so that the proxy will cache … [Previous page](https://www.ruby-forum.com/latest.md?page=545) [Next page](https://www.ruby-forum.com/latest.md?page=547)