# Latest **URL:** https://www.ruby-forum.com/latest.md?page=496 [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:** 497 --- ## [GRC: File/Path browser in QT or WX gui?](https://www.ruby-forum.com/t/grc-file-path-browser-in-qt-or-wx-gui/237596)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [November 20, 2013, 5:51pm UTC](https://www.ruby-forum.com/t/grc-file-path-browser-in-qt-or-wx-gui/237596 "2013-11-20T17:51:40Z")
I am looking for a standard file browser widget for a QT or Wx based GUI. You browse the filesystem and the moment you click “o.k.” the choosen path is put into a variable that can be used within your flowgraph. Is th… --- ## [Adding role's field to users](https://www.ruby-forum.com/t/adding-roles-field-to-users/237542)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 15\ **Last updated:** [November 20, 2013, 5:41pm UTC](https://www.ruby-forum.com/t/adding-roles-field-to-users/237542 "2013-11-20T17:41:09Z")
Hi, (Using Rails 4.0.1, Ruby 1.9.3, latest devise and cancan gems. sqlite db for local development) I am a rookie, setting up website and was adding roles(using cancan gem) to my users table. Everything works great,… --- ## [Nginx-1.5.7](https://www.ruby-forum.com/t/nginx-1-5-7/237568)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [November 20, 2013, 5:39pm UTC](https://www.ruby-forum.com/t/nginx-1-5-7/237568 "2013-11-20T17:39:58Z")
Changes with nginx 1.5.7 19 Nov 2013 \*) Security: a character following an unescaped space in a request line was handled incorrectly (CVE-2013-4547); the bug had appeared in … --- ## [Limitations of Dampening factor in PLL](https://www.ruby-forum.com/t/limitations-of-dampening-factor-in-pll/237583)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [November 20, 2013, 5:32pm UTC](https://www.ruby-forum.com/t/limitations-of-dampening-factor-in-pll/237583 "2013-11-20T17:32:22Z")
Can somebody explain why the dampening factor inside gr::blocks::control\_loop is clamped to being (0, 1)? I understand why the default has been set to sqrt(2)/2 and not provided from the constructor, I just cannot … --- ## [Sinatra Cookbook - Recipes for the Ruby framework](https://www.ruby-forum.com/t/sinatra-cookbook-recipes-for-the-ruby-framework/237600)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [November 20, 2013, 4:53pm UTC](https://www.ruby-forum.com/t/sinatra-cookbook-recipes-for-the-ruby-framework/237600 "2013-11-20T16:53:20Z")
Today saw the launch of a new Kickstarter project, Sinatra Cookbook - Recipes for the Ruby framework, a 12 chapter ebook featuring 12 example Sinatra applications The book, written by me is planned to be complete by J… --- ## [UDPLog, multiple locations](https://www.ruby-forum.com/t/udplog-multiple-locations/237598)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 20, 2013, 3:21pm UTC](https://www.ruby-forum.com/t/udplog-multiple-locations/237598 "2013-11-20T15:21:30Z")
Hi, We’re about to use the UDP log module from multiple locations to send log entries to Flume. But we stumbled upon the issue 1 that UDP log is having trouble working when multiple locations are involved. There has … --- ## [USB-SA44B spectrum analyzer](https://www.ruby-forum.com/t/usb-sa44b-spectrum-analyzer/237588)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [November 20, 2013, 3:08pm UTC](https://www.ruby-forum.com/t/usb-sa44b-spectrum-analyzer/237588 "2013-11-20T15:08:04Z")
Hi everyone I’ve been using gnuradio for six months now, I wanted to ask if its possible to interface a signal hound spectrum analyzer to work as a USRP with gnuradio. Thanks Sent from my BlackBerry wireless device --- ## [Sparse matrix 2](https://www.ruby-forum.com/t/sparse-matrix-2/237579)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 1\ **Last updated:** [November 20, 2013, 2:54pm UTC](https://www.ruby-forum.com/t/sparse-matrix-2/237579 "2013-11-20T14:54:37Z")
Class SparseVector attr\_reader :vector def initialize(h = {}) @vector = Hash.new(0) @vector = @vector.merge!(h) end def \[\](i) @vector\[i\] end def to\_s @vector.to\_s end end class SparseMatrix attr\_re… --- ## [Group SMS INtegration](https://www.ruby-forum.com/t/group-sms-integration/237597)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [November 20, 2013, 2:52pm UTC](https://www.ruby-forum.com/t/group-sms-integration/237597 "2013-11-20T14:52:45Z")
Hello , i am developing an application in which Group SMS Integration is involved , can anyone please suggest me how can i integrate that , i.e., sending an sms to multiple members at a time , please suggest me if yo… --- ## [GRC fails to execute](https://www.ruby-forum.com/t/grc-fails-to-execute/237595)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 20, 2013, 2:48pm UTC](https://www.ruby-forum.com/t/grc-fails-to-execute/237595 "2013-11-20T14:48:05Z")
Now when I execute a simple flowgraph, the GRC fails to execute and gives the following error: Traceback (most recent call last): File “/home/meer/Desktop/top\_block.py”, line 8, in from gnuradio import analog File … --- ## [Noob to rails TDD - looking for just one complete and simple example](https://www.ruby-forum.com/t/noob-to-rails-tdd-looking-for-just-one-complete-and-simple-example/237586)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 4\ **Last updated:** [November 20, 2013, 2:47pm UTC](https://www.ruby-forum.com/t/noob-to-rails-tdd-looking-for-just-one-complete-and-simple-example/237586 "2013-11-20T14:47:36Z")
I am a noob to TDD, and I am looking for just one complete and simple example, that uses FactoryGirl, with rspec, on rails, with a ActiveRecord::Base model. If anyone can help me I will be eternally in your dept. For… --- ## [FTW IEEE802.11a/g/p OFDM Frame Encoder: How to run on gnuradio v3.6.5.1?](https://www.ruby-forum.com/t/ftw-ieee802-11a-g-p-ofdm-frame-encoder-how-to-run-on-gnuradio-v3-6-5-1/237578)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [November 20, 2013, 1:31pm UTC](https://www.ruby-forum.com/t/ftw-ieee802-11a-g-p-ofdm-frame-encoder-how-to-run-on-gnuradio-v3-6-5-1/237578 "2013-11-20T13:31:39Z")
Dear Sir, How to make FTW work on gnuradio v3.6.5.1 ? In my research I need to setup a 802.11 MAC SDR. In the example published by Uwicore ( http://www.uwicore.umh.es/mhop-software.html) I have to install physical l… --- ## [Mark HTTP chunk terminator to be flushed](https://www.ruby-forum.com/t/mark-http-chunk-terminator-to-be-flushed/237587)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 1\ **Last updated:** [November 20, 2013, 11:41am UTC](https://www.ruby-forum.com/t/mark-http-chunk-terminator-to-be-flushed/237587 "2013-11-20T11:41:14Z")
This really only affects SSL connections, where if the buffer with chunk terminator is copied into the SSL buffer by itself. Since the new SSL buffer has not reached 16k, it’s not flushed thus causing a delay in the c… --- ## [Need a help in scripting](https://www.ruby-forum.com/t/need-a-help-in-scripting/237491)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 9\ **Last updated:** [November 20, 2013, 7:56am UTC](https://www.ruby-forum.com/t/need-a-help-in-scripting/237491 "2013-11-20T07:56:25Z")
Hello Friends, I am facing a problem in coding a certain thing and i am completely unaware of it. The requirement is that… When i am executing my ruby scripts through cmd, then after executing the scripts an html re… --- ## [Need a Help to save a file](https://www.ruby-forum.com/t/need-a-help-to-save-a-file/237585)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 0\ **Last updated:** [November 20, 2013, 7:50am UTC](https://www.ruby-forum.com/t/need-a-help-to-save-a-file/237585 "2013-11-20T07:50:34Z")
Hi! I’m trying to write a ruby script that tests a “print to pdf” functionality…so, I have a list on my screen, and by pressing the Print button, a PDF is generated…a file download window appears…could I click Save o… --- ## [HELP! - Problem with radio application deploy](https://www.ruby-forum.com/t/help-problem-with-radio-application-deploy/237580)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 12\ **Last updated:** [November 20, 2013, 2:39am UTC](https://www.ruby-forum.com/t/help-problem-with-radio-application-deploy/237580 "2013-11-20T02:39:10Z")
I am trying to deploy my radio application (using GRC), and I am running into a problem. I am sampling at 50MHz and trying to pare things down to 30MHz using a Low Pass Filter, defined as follows: Decimation = 50 Gai… --- ## [3 ways to do the same? (Modules)](https://www.ruby-forum.com/t/3-ways-to-do-the-same-modules/237582)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 20, 2013, 2:09am UTC](https://www.ruby-forum.com/t/3-ways-to-do-the-same-modules/237582 "2013-11-20T02:09:57Z")
Hi. Take the following code, best save it locally in your editor: module Test1 def test1 puts “Hello from Test1” end extend self end module Test2 module\_function def test2 puts “Hello from Test2” end end mod… --- ## [Using gr-atsc library](https://www.ruby-forum.com/t/using-gr-atsc-library/237507)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 4\ **Last updated:** [November 20, 2013, 1:08am UTC](https://www.ruby-forum.com/t/using-gr-atsc-library/237507 "2013-11-20T01:08:53Z")
Hi, My name is Yuri and I’m new to the GNU Radio “world”. I’m trying to use some pieces of the code from the gr-atsc librabry in my project, for latter adaptation to my purpose, but I don’t know if what I’m doing is … --- ## [Stuck at the first hurdle!](https://www.ruby-forum.com/t/stuck-at-the-first-hurdle/237541)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 17\ **Last updated:** [November 19, 2013, 11:13pm UTC](https://www.ruby-forum.com/t/stuck-at-the-first-hurdle/237541 "2013-11-19T23:13:47Z")
I’m reading Chris P.s Learn to program and I am on “Getting Started” page 17 It says to download the latest version from rubyinstaller.org which I did. After that it says to make a new desktop folder and name it prog… --- ## [Matriz dispersa](https://www.ruby-forum.com/t/matriz-dispersa/237576)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 19, 2013, 10:47pm UTC](https://www.ruby-forum.com/t/matriz-dispersa/237576 "2013-11-19T22:47:24Z")
Class SparseVector attr\_reader :vector def initialize(h = {}) @vector = Hash.new(0) @vector = @vector.merge!(h) end def \[\](i) @vector\[i\] end def to\_s @vector.to\_s end end class SparseMatrix attr\_re… --- ## [Ruby will be die :(](https://www.ruby-forum.com/t/ruby-will-be-die/237380)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 23\ **Last updated:** [November 19, 2013, 9:28pm UTC](https://www.ruby-forum.com/t/ruby-will-be-die/237380 "2013-11-19T21:28:53Z")
Hello Rubyist. Will ruby die in the future? We have some new technologieslike Node.js and angular but how ruby can challenge them? Cheers. --- ## [\[ANN\] Multidimensiona Array - MDArray 0.5.5](https://www.ruby-forum.com/t/ann-multidimensiona-array-mdarray-0-5-5/237577)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 19, 2013, 9:23pm UTC](https://www.ruby-forum.com/t/ann-multidimensiona-array-mdarray-0-5-5/237577 "2013-11-19T21:23:36Z")
Announcement MDArray version 0.5.5 has Just been released. MDArray is a multi dimensional array implemented for JRuby inspired by NumPy (www.numpy.org) and Masahiro Tanaka´s Narray (narray.rubyforge.org). MDArray s… --- ## [“ThreadError: current thread not owner” using Sinatra?](https://www.ruby-forum.com/t/threaderror-current-thread-not-owner-using-sinatra/237510)
**Author:** [@musicdenotation](https://www.ruby-forum.com/u/musicdenotation)\ **Replies:** 2\ **Last updated:** [November 19, 2013, 8:52pm UTC](https://www.ruby-forum.com/t/threaderror-current-thread-not-owner-using-sinatra/237510 "2013-11-19T20:52:21Z")
I’m building a small Sinatra server which has one GET route called /execute. It accepts a code parameter and runs the Ruby code from that parameter using the sandboxed gem, returning a result in JSON. # /app.rb class … --- ## [Gr-ieee802-11 grc files missing](https://www.ruby-forum.com/t/gr-ieee802-11-grc-files-missing/237575)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 6\ **Last updated:** [November 19, 2013, 8:39pm UTC](https://www.ruby-forum.com/t/gr-ieee802-11-grc-files-missing/237575 "2013-11-19T20:39:30Z")
I’m taking a look at the gr-ieee802-11 project. I’m unable to use ofdm\_loopback.grc because ofdm\_phy\_hier appears to be missing. I’ve installed gr-ieee802-11 and gr-foo from Bastian’s github page. What step am I missi… --- ## [ActiveRecord simple question about date](https://www.ruby-forum.com/t/activerecord-simple-question-about-date/237567)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 5\ **Last updated:** [November 19, 2013, 8:27pm UTC](https://www.ruby-forum.com/t/activerecord-simple-question-about-date/237567 "2013-11-19T20:27:49Z")
Hi all, i have User model with bdate: string Try : User.find(2).bdate =\> Wed, 09 May 1945 User.find(2).bdate.to\_s =\> “1945-05-09” But if i run: User.where(bdate: “1945-05-09”) =\> \[\] Why??? --- ## [Telefonia](https://www.ruby-forum.com/t/telefonia/237481)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 17\ **Last updated:** [November 19, 2013, 7:24pm UTC](https://www.ruby-forum.com/t/telefonia/237481 "2013-11-19T19:24:07Z")
Ciao, sposto la discussione sulle applicazioni VoIP in Ruby da questa parte se no ci sparano. Per Sickpig: ma usate per caso Adhearsion? Come controllate Asterisk? Per inciso, se avete problemi con i segfault, magari… --- ## [Newbie having trouble at my first task. Please Help!](https://www.ruby-forum.com/t/newbie-having-trouble-at-my-first-task-please-help/237562)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 11\ **Last updated:** [November 19, 2013, 6:11pm UTC](https://www.ruby-forum.com/t/newbie-having-trouble-at-my-first-task-please-help/237562 "2013-11-19T18:11:17Z")
I am trying to teach myself programming as a complete beginner. I use a windows XP laptop. I have read up some of the basic concepts on Hackety Hack and am now trying to use Chris P.s book ‘Learn to program’ I have in… --- ## [Sparse matrix](https://www.ruby-forum.com/t/sparse-matrix/237524)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 2\ **Last updated:** [November 19, 2013, 6:01pm UTC](https://www.ruby-forum.com/t/sparse-matrix/237524 "2013-11-19T18:01:43Z")
Hi, Emerged me a doubt to perform some operations with dense matrices and sparse matrices. I’m doing a few methods to check whether an array is dense or not and use a hash of hashes, for then do methods of addition a… --- ## [Instantiating Date class in Ruby C extension](https://www.ruby-forum.com/t/instantiating-date-class-in-ruby-c-extension/237573)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 3\ **Last updated:** [November 19, 2013, 5:24pm UTC](https://www.ruby-forum.com/t/instantiating-date-class-in-ruby-c-extension/237573 "2013-11-19T17:24:19Z")
Hi, I want to instantiate the Date class in my Ruby C extension. However when I pass arguments to the new method, I get an error that I am passing arguments when zero arguments are expected. Note the following syntax… --- ## [Dev Call November](https://www.ruby-forum.com/t/dev-call-november/237571)
**Author:** [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Replies:** 0\ **Last updated:** [November 19, 2013, 4:16pm UTC](https://www.ruby-forum.com/t/dev-call-november/237571 "2013-11-19T16:16:31Z")
Hi all, this Thursday is the third Thursday of the month, and as usual, there will be a developer’s call. To get the time in your time zone, head over to our G+ page to have Google convert it for you (it’s 19:00 CET)… [Previous page](https://www.ruby-forum.com/latest.md?page=495) [Next page](https://www.ruby-forum.com/latest.md?page=497)