# Latest **URL:** https://www.ruby-forum.com/latest.md?page=457 [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:** 458 --- ## [Move ball with Ruby(/Shoes)](https://www.ruby-forum.com/t/move-ball-with-ruby-shoes/238683)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 3\ **Last updated:** [January 26, 2014, 1:45am UTC](https://www.ruby-forum.com/t/move-ball-with-ruby-shoes/238683 "2014-01-26T01:45:55Z")
Hello, we need to move a Ball with ruby and Shoes. It should move through the window, but not leave. Now we have the class ball, it is there if we open Shoes. But it doesn´t move. We know we need a method for this. Bu… --- ## [GNU Radio Questions](https://www.ruby-forum.com/t/gnu-radio-questions/238724)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [January 26, 2014, 12:40am UTC](https://www.ruby-forum.com/t/gnu-radio-questions/238724 "2014-01-26T00:40:14Z")
Hi, got some questions Can GNURadio run on OpenSUSE Linux Can GNURadio work with RTL SDR dongles ? What can you do with the output of GNU Radio For instance, other than listening , can you decode AX25 decode PSK31 … --- ## [\[Need advice for newbie\] How to define structure of applications in case I have multiple user roles](https://www.ruby-forum.com/t/need-advice-for-newbie-how-to-define-structure-of-applications-in-case-i-have-multiple-user-roles/238722)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [January 25, 2014, 11:15pm UTC](https://www.ruby-forum.com/t/need-advice-for-newbie-how-to-define-structure-of-applications-in-case-i-have-multiple-user-roles/238722 "2014-01-25T23:15:48Z")
Hi, I am really newbie in RoR, I am just reading this bookhttp://pragprog.com/book/rails2/agile-web-development-with-rails. I am trying to make very simple application who should have 3 user roles (3 groups of many … --- ## [B100 clock with UHD](https://www.ruby-forum.com/t/b100-clock-with-uhd/238613)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [January 25, 2014, 8:29pm UTC](https://www.ruby-forum.com/t/b100-clock-with-uhd/238613 "2014-01-25T20:29:20Z")
Discuss-gnuradio mailing list removed\_email\_address@domain.invalid https://lists.gnu.org/mailman/listinfo/discuss-gnuradio --- ## [Request with Content-Type: "application/json" add extra parameter](https://www.ruby-forum.com/t/request-with-content-type-application-json-add-extra-parameter/228328)
**Author:** [@unknown](https://www.ruby-forum.com/u/unknown)\ **Replies:** 4\ **Last updated:** [January 25, 2014, 7:18pm UTC](https://www.ruby-forum.com/t/request-with-content-type-application-json-add-extra-parameter/228328 "2014-01-25T19:18:04Z")
Howdy, I am making a few AJAX endpoints using rails, and noticed the following inconsistent behavior when setting the Content-Type to application/json. Here are four different requests to show the problem I am having. … --- ## [External library for low pass filtering](https://www.ruby-forum.com/t/external-library-for-low-pass-filtering/238721)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 25, 2014, 5:04pm UTC](https://www.ruby-forum.com/t/external-library-for-low-pass-filtering/238721 "2014-01-25T17:04:13Z")
Dear Sir, I understand that gnuradio use FFTW to perform fast fourier transform. In contrast, what is the library used by gnuradio to perform low-pass filtering (LPF)? My intension is to create a custom block to perf… --- ## [I am getting a Segmentation fault (core dumped) error when running companion](https://www.ruby-forum.com/t/i-am-getting-a-segmentation-fault-core-dumped-error-when-running-companion/237489)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [January 25, 2014, 4:26pm UTC](https://www.ruby-forum.com/t/i-am-getting-a-segmentation-fault-core-dumped-error-when-running-companion/237489 "2014-01-25T16:26:55Z")
Discuss-gnuradio mailing list removed\_email\_address@domain.invalid https://lists.gnu.org/mailman/listinfo/discuss-gnuradio --- ## [Re: Maven dependency management](https://www.ruby-forum.com/t/re-maven-dependency-management/238682)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 13\ **Last updated:** [January 25, 2014, 4:23pm UTC](https://www.ruby-forum.com/t/re-maven-dependency-management/238682 "2014-01-25T16:23:37Z")
so finally I got around and did my first gem with native-extension which basically installs the declared jar dependencies. see the simple gem has jar dependencies but does not vendor them. on install of the gem tho… --- ## [Production vs Development](https://www.ruby-forum.com/t/production-vs-development/238709)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 8\ **Last updated:** [January 25, 2014, 3:35pm UTC](https://www.ruby-forum.com/t/production-vs-development/238709 "2014-01-25T15:35:29Z")
Hi folks. New to Rails. Got the following coming up using Passenger: We’re sorry, but something went wrong. If you are the application owner check the logs for more information. Turns out mysql is barfing. My datab… --- ## [Check the count of continues letter from a string](https://www.ruby-forum.com/t/check-the-count-of-continues-letter-from-a-string/238715)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 25, 2014, 10:54am UTC](https://www.ruby-forum.com/t/check-the-count-of-continues-letter-from-a-string/238715 "2014-01-25T10:54:56Z")
Can you show me exact code using Regex to take number of continues letter ‘o’ from “goooglogic”? Already we know, ‘goooglogic’.count(‘o’) will show 5. Now I expecting the result (continues letter) is 3 from that strin… --- ## [Inject and reduce method](https://www.ruby-forum.com/t/inject-and-reduce-method/238718)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [January 25, 2014, 10:52am UTC](https://www.ruby-forum.com/t/inject-and-reduce-method/238718 "2014-01-25T10:52:25Z")
Anybody say more about inject and reduce methods in Array as well as Hash. if we can use those methods other than those classes than sing that too. waiting to listen. --- ## [How to use FFT without grc block](https://www.ruby-forum.com/t/how-to-use-fft-without-grc-block/238691)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 14\ **Last updated:** [January 25, 2014, 10:50am UTC](https://www.ruby-forum.com/t/how-to-use-fft-without-grc-block/238691 "2014-01-25T10:50:46Z")
Hi all, I know there is an FFT block in gnuradio 3.7. I want to create a cc file and add some gnuradio classes there. Can I use FFT without .grc file without using blocks, just as a c++ function? --- ## [Testi per un corso](https://www.ruby-forum.com/t/testi-per-un-corso/238708)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 4\ **Last updated:** [January 25, 2014, 8:41am UTC](https://www.ruby-forum.com/t/testi-per-un-corso/238708 "2014-01-25T08:41:54Z")
Buonasera a tutti i membri del forum. Avrei bisogno di un consiglio. Devo iniziare un piccolo corso su Rails a dei programmatori che non conoscono ancora Ruby. Visto che durante un corso un manuale “cartaceo” e’ semp… --- ## [SNR estimation for QAM modulation](https://www.ruby-forum.com/t/snr-estimation-for-qam-modulation/238710)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 24, 2014, 11:01pm UTC](https://www.ruby-forum.com/t/snr-estimation-for-qam-modulation/238710 "2014-01-24T23:01:53Z")
Hi all, I’m wondering if SNR estimation by using the probe\_mpsk\_snr\_est\_xx can be applied to QAM modulation as well? I checked the source code and found nothing specific tied to MPSK modulation. Also, I found Tom has… --- ## [How to store ldap data in ruby on rails application database?](https://www.ruby-forum.com/t/how-to-store-ldap-data-in-ruby-on-rails-application-database/237729)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [January 24, 2014, 11:01pm UTC](https://www.ruby-forum.com/t/how-to-store-ldap-data-in-ruby-on-rails-application-database/237729 "2014-01-24T23:01:04Z")
i have created a web app with rails4 and authentication system is developed with devise\_ldap\_authenticable gem. where i am using username for login not email. but i want to store email in my users table. My user mode… --- ## [Install: qa\_volk\_test\_all fails on armv7](https://www.ruby-forum.com/t/install-qa-volk-test-all-fails-on-armv7/237723)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 13\ **Last updated:** [January 24, 2014, 9:23pm UTC](https://www.ruby-forum.com/t/install-qa-volk-test-all-fails-on-armv7/237723 "2014-01-24T21:23:13Z")
The volk test is failing on my gnuradio build on a Beaglebone Black (armv7h) running Arch Linux Arm. Configuration that failed to enable: gr-ctrlport \*\*\* disabled \[do i need this?\] gr-comedi \*\*\* disabled \[don’t need… --- ## [LAMP server configuration on Linux](https://www.ruby-forum.com/t/lamp-server-configuration-on-linux/238642)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [January 24, 2014, 7:40pm UTC](https://www.ruby-forum.com/t/lamp-server-configuration-on-linux/238642 "2014-01-24T19:40:51Z")
Dear friends! Can anyone help: I want to configure my a LAMP server to run a rail based application Thanks. --- ## [Has\_and\_belongs\_to\_many and updated\_at](https://www.ruby-forum.com/t/has-and-belongs-to-many-and-updated-at/238689)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 24, 2014, 3:55pm UTC](https://www.ruby-forum.com/t/has-and-belongs-to-many-and-updated-at/238689 "2014-01-24T15:55:04Z")
Hi there, When I have a model with has\_and\_belongs\_to\_many :keywords and a keyword is added or removed, how can I make it to update its updated\_at timestamp? Thanks, Martin --- ## [\[Gnu-radio\] import blsk2](https://www.ruby-forum.com/t/gnu-radio-import-blsk2/238706)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [January 24, 2014, 3:47pm UTC](https://www.ruby-forum.com/t/gnu-radio-import-blsk2/238706 "2014-01-24T15:47:04Z")
Hello I installed gnuradio, but when I run a code against problem: Traceback (most recent call last): File “monitor\_gui\_v07.py”, line 19, in from gmrs\_txrx import \* File “/ home / rita / PTT / USRP / gmrs\_txrx.py”,… --- ## [File open with default application](https://www.ruby-forum.com/t/file-open-with-default-application/238705)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [January 24, 2014, 3:24pm UTC](https://www.ruby-forum.com/t/file-open-with-default-application/238705 "2014-01-24T15:24:09Z")
Hi, I should open file with default application, I can use xdg-open with sys call but I don’t want to use sys call. Can I do this using any gem? --- ## [\[Need advice\] Dynamic URL pointing at controllers action](https://www.ruby-forum.com/t/need-advice-dynamic-url-pointing-at-controllers-action/238695)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [January 24, 2014, 3:07pm UTC](https://www.ruby-forum.com/t/need-advice-dynamic-url-pointing-at-controllers-action/238695 "2014-01-24T15:07:47Z")
First of all sorry for the confusing title. I don’t really know how to explain what I want to do in one line. I am creating a Rails website in which Developers will be able to be listed and create profiles. In the pro… --- ## [Help- Converting String to a Method Call](https://www.ruby-forum.com/t/help-converting-string-to-a-method-call/238698)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 9\ **Last updated:** [January 24, 2014, 2:49pm UTC](https://www.ruby-forum.com/t/help-converting-string-to-a-method-call/238698 "2014-01-24T14:49:29Z")
I am new to Ruby. I’m trying to convert a string to a method call in Ruby. I intend to store all my function calls in an Excel Worksheet and use the extracted strings to make the actual method call. But I am not able … --- ## [Rails upload video using paperclip](https://www.ruby-forum.com/t/rails-upload-video-using-paperclip/229300)
**Author:** [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Replies:** 4\ **Last updated:** [January 24, 2014, 2:43pm UTC](https://www.ruby-forum.com/t/rails-upload-video-using-paperclip/229300 "2014-01-24T14:43:41Z")
Hi Folks, Good noon, I want to upload a video using paperclip and also stored in my assets. Please advice. Thank You. --- ## [Constructor of block is not private](https://www.ruby-forum.com/t/constructor-of-block-is-not-private/238676)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [January 24, 2014, 2:06pm UTC](https://www.ruby-forum.com/t/constructor-of-block-is-not-private/238676 "2014-01-24T14:06:01Z")
Dear Sir, From the documentation, the constructor of user-defined block is often private. But how come it is defined as public, refer below code. This is a typical code generated by gr\_modtool: Filename: byte\_source… --- ## [Merging (add) two yaml objects into one](https://www.ruby-forum.com/t/merging-add-two-yaml-objects-into-one/238704)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [January 24, 2014, 1:11pm UTC](https://www.ruby-forum.com/t/merging-add-two-yaml-objects-into-one/238704 "2014-01-24T13:11:31Z")
I would like to merge two yaml objects into one. Something like this: o1 = YAML.load\_file(‘file1.yml’) o2 = YAML.load\_file(‘file2.yml’) o3 = o1 + o2 or o1 \<\< o2 I can’t find this in documentation or is it not imple… --- ## [Repurpose old items when you redecorate for a fun, personalized feel](https://www.ruby-forum.com/t/repurpose-old-items-when-you-redecorate-for-a-fun-personalized-feel/238699)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 24, 2014, 12:39pm UTC](https://www.ruby-forum.com/t/repurpose-old-items-when-you-redecorate-for-a-fun-personalized-feel/238699 "2014-01-24T12:39:38Z")
Decorating on a budget is one of my most favorite things to write about. Some people might consider a limited budget for interior design to be a hindrance, but I think it opens avenues for endless creativity, opportun… --- ## [SSL behaviour with multiple server blocks for same port](https://www.ruby-forum.com/t/ssl-behaviour-with-multiple-server-blocks-for-same-port/238684)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 5\ **Last updated:** [January 24, 2014, 12:23pm UTC](https://www.ruby-forum.com/t/ssl-behaviour-with-multiple-server-blocks-for-same-port/238684 "2014-01-24T12:23:38Z")
Hi, I am struggling to get any documented reference for my problem in nginx docs. Hope someone can help before I delve into nginx code: I want to have multiple server blocks for the https port 443, they will serve di… --- ## [\[JOB\] Rails Developer Long Island, NY](https://www.ruby-forum.com/t/job-rails-developer-long-island-ny/238694)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [January 24, 2014, 11:45am UTC](https://www.ruby-forum.com/t/job-rails-developer-long-island-ny/238694 "2014-01-24T11:45:26Z")
Ruby on Rails Developer Melville, NY (local candidates only) We are looking for an experienced Rails developer with software design and coding skills, with knowledge of jQuery. Our stack includes Ruby, Rails, Javasc… --- ## [Advise on signing up users and activating their accounts](https://www.ruby-forum.com/t/advise-on-signing-up-users-and-activating-their-accounts/238700)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 5\ **Last updated:** [January 24, 2014, 11:04am UTC](https://www.ruby-forum.com/t/advise-on-signing-up-users-and-activating-their-accounts/238700 "2014-01-24T11:04:00Z")
I’m new to Rails but so far I’ve completed the Rails Tutorial book and applying that stuff to my first proper app. Later I will tackle implementing user authentication (sign up, sign in, sign out) In the book it demon… --- ## [Count the continues letters from a word](https://www.ruby-forum.com/t/count-the-continues-letters-from-a-word/238702)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [January 24, 2014, 10:30am UTC](https://www.ruby-forum.com/t/count-the-continues-letters-from-a-word/238702 "2014-01-24T10:30:39Z")
Hi Ruby lovers, guide me to find out the letter which is exist as continues and how long this? for eg: “gooogle” result must be as: “In gooogle, o is exist with 3 times” [Previous page](https://www.ruby-forum.com/latest.md?page=456) [Next page](https://www.ruby-forum.com/latest.md?page=458)