search for: lessons

I''ve just started a new rails project (3.0.1, ruby 1.9.2 on Mac OS X), and have a few parts of it built out. I''ve just created new controller/views using rails g scaffold_controller Lesson, and then added a route to routes.rb with "resources :lessons" Now, when i go to /lessons, Webrick fails with "Illegal instruction" The controller function getting hit is lessons#index, and looks like this: # GET /lessons # GET /lessons.xml def index @lessons = Lesson.all respond_to do |format| format.html index.html.erb format....

I have just published a article (http://masnetworks.biz/node/20) about exhibiting at LinuxWorld Expo and the lessons learned. I heard some talk about some interest in doing the San Fran show. Please feel free to contact me for any suggestions, help, CD's & DVD's etc. -- Matt Shields http://masnetworks.biz http://sexydates4u.com http://shieldslinux.com http://shieldsmedia.com (currently under const...

I have a column in which dates and times are specified thus m/d/yyyy HH:MM:SS Alas, some entries do not include the time and therefore are only m/d/yyyy so I used read.csv and specified that the relevant column should be read as is and it remained as a character variable. I then split the value on the space split.dt.time <-strsplit(teacher$Date.and.Time.of.Lesson," ") that gives me a

Hi! I'm learning Mathematical Statistics at a hungarian university. My teacher, who teaches these lessons, using the R to introduce some topics. I want to pass on the exam, and this exam contains some R questions too, but the teacher doesn't thaught us too much about R, so I would like to ask for some help from you in solving some example questions in R. So, here are some questions, that I...

A course has many lessons and a lesson has many topics. A topic can have a recipe or vice versa, a recipe has many topics (optional). I need to come up with the most efficient way of querying the database to find those topics belonging to a course (via lessons of course) which have a recipe (in other words recipe_id is not...

I wonder if you can have more than one has_many :through association between 2 models. For example... I have a model Teacher and a model Class Now, 1 Teacher works in many Classes, right?. So I need a join model like class Work < ActiveRecord::Base belongs_to :teacher belongs_to :class end But I also would like to know if a teacher CAN teach a class before I

Hello all, I learned a very valuable lesson this weekend and thought I would share. I noticed that the xcdroastalpha15-rhel3.i386.rpm's non root mode didn't work very well, so I decided to set out an build my own rpm for it. Well I still can figure out how to add icons to the Main Draw but did finally build a good working RPM. However after doing some reading on the Xcdroast web

I have a recording studio in Brooklyn NY and I am seeking help in some lessons and setting up. I have been learning linux and asterisk very well thanks to lurking in the group and info on the voip-info. I would like some one to come over and give me a tutorial, check my box out, make sure everything is secure and answer some really dumb questions that I have. In return I...

Hi Rubyists! I''m quite new to Ruby/Rails thing, so please be patient with me :) -------- (skip to next -------- if you want to quickly see the problem) I am learning by creating something like timetable application (like in school). There are days 1-5 and lessons 1-8. I have to db tables, subjects, which is the list of subjects, and subject_lessons, which is assocation of a subject to a particular day and lesson. It''s a one-to-many relationship, because one subject can be assigned to more lessons, but on one lesson there could be only one subject....

Hello everyone, I have a set of data in the following form, which are stored in an Excel file: nick john peter lesson1 0.465 0.498 0.473 lesson2 0.422 0.44 0.134 lesson3 0.45 0.35 0.543 lesson4 0.590 0.64 0.11 lesson5 0.543

I thought other might benefit from this lesson learned and thought it maybe should be added to the man-pages. I thought my network connection was glitchy and hence set rsync up for --timeout=120 but I found out that I was actually causing the glitch with this script: #! /bin/sh - while true; do rsync -avz --progress --timeout=120 --delete /media/rsync_gb01/movies/ myserver:movies; sleep 120; done

I've been considering replacing a PRI with SIP or IAX trunks. The monthly cost difference is marginal, but it would save a bit on the hardware side and soft trunks would be easier to manage. I can't help but wonder what I would be giving up? I'd like to hear some "lessons learned" from those who are doing it or decided, for whatever reason, it's a bad idea. -------------- next part -------------- A non-text attachment was scrubbed... Name: jcanfield.vcf Type: text/x-vcard Size: 341 bytes Desc: not available Url : http://lists.digium.com/pipermail/ast...

I tried to compile and run the code from the Kaleidescope tutorial: http://llvm.org/docs/tutorial/LangImpl3.html While the compilation worked fine, the run did not. I'm using the version of llvm from svn for 12/15/09. In gdb I get this stack trace, and never see the "ready>" prompt. Apparently it's dying inside constructors in the headers somewhere. #0 0x00000036b502e21d

After a fresh installation of an application, some utility scripts run with script/runner quietly aborted right after their start. No error message whatsoever, just a new shell prompt. The reason was an uninstalled dependecy, but that was difficult to determine because the load failure was not reported: % ruby script/runner ''require "foobarbaz"'' % Why

A link_to_remote call was generating Ajax.Request instead of Ajax.Updater. I couldn''t for the life of me understand why. There was some extra indirection because I used there a helper of mine that receives an image and generates a link_to_remote with image_tag and some stuff for image rollover. After browsing the sources in the API website (hey, that "[ show source ]"

The message below came to me from the Getting Open Source Logic INto Government list. I'm passing it on to the devel list as the infoworld article may have some ideas of relevance to the R project, mainly concerning build and test issues and tracking changes in the code base. While the LibreOffice project is very different from R, there may nevertheless be some tips we can borrow in the

Hello to all, My name's Can, I'm a server administrator in a middle-size company. I have a small question about Icecast. I'm about to create an online learning platform for blind users. I installed Moodle, would like to embed audio contents into lessons to prevent downloading. Is it possible to use Icecast as an audio streamer? I used it for a radio before, but after installation Icecast to my CentOS or Ubuntu server, what can i do to get URL for my audio files? Thanks for your answers from now, regards.

After trying RailsStory for a few days, I have learned: 1. Rails testing support does not serve up static pages 2. RailsStory masks errors generated by the app under test 3. The masked errors are available in log/test 4. I should read log/test more often See http://pastie.caboo.se/107876 for an example for points 2 and 3 The welcome controller fails when the HTTP_USER_AGENT is missing.

...pies anymore, just roll out > "free" services, and information will trickle to you. I am old enough > to know what collection of information on everybody leads to (Hitler > Germany, Stalin Russia, ...), but I also know that the worst lesson of > history is: people do not learn lessons of history. So, I do the best > I can do: roll out services people I work for may need, and avoid by > any means advertising google whatever myself, I just keep neutral when > that surfaces in discussions with my people. > </rant> Well said. I feel that too many people today have...

Oops, I just erased all my data using this gizmo that I thought would replace -9 with NA. A) Can I get my tcn5 back? B) How do I do it right next time, I learned my lesson, I'll never do it again, I promise! Anders Corr > for(i in 1:dim(tcn5)[2]){ ##for the number of columns + for(n in 1:dim(tcn5)[1]){ ##for the number of rows + tcn5[is.na(tcn5[n,i]) | tcn5[n,i]