jquery.form vs remote_form
Hi, Could you tell me pros and cons of using jquery.form plugin and basic remote_form_for from RoR? What is better? ...
ruby
Anyone used the Ruby Nettica gem?
Has anyone used the Ruby Nettica gem to add an A-record to their DNS file on Nettica? I am continually getting 404 errors but I know that my user/pass creds are correct and I know the domain exists! Thanks for any help. Chad ...
Webrick transparent proxy
Hi there, I've a absolute simple proxy running. require 'webrick' require 'webrick/httpproxy' s = WEBrick::HTTPProxyServer.new(:Port => 8080, :RequestCallback => Proc.new{|req,res| puts req.request_line, req.raw_header}) # Shutdown functionality trap("INT"){s.shutdown} # run the beast s.start This should in my mind not influ...
Shorter Rails routes
Hello, I have a thing blog application, and I would like to shorten my routes. Here there are: Blog::Application.routes.draw do resources :categories do resources :articles do resources :comments end end A rake routes command build the following lines: GET /categories/:category_id/art...
What's a good tutorial for creating a gem with RSpec?
I've been searching around for ways to create a gem with RSpec, but haven't found descriptive tutorials. I started out with Ryan Bates' Making a gem, but I'm looking for a tutorial that discusses creating an acts_as style gem with RSpec. By acts_as, I mean to say that the gem adds certain methods to an existing class in Rails. Why is t...
Why do people say that Ruby is slow?
I like Ruby on Rails and I use it for all my web development projects. A few years ago there was a lot of talk about Rails being a memory hog and about how it didn't scale very well but these suggestions were put to bed by Gregg Pollack here. Lately though, I've been hearing people saying that Ruby itself is slow. Why is Ruby consi...
How does Ruby's Array.| compare elements for equality?
Here's some example code: class Obj attr :c, true def == that p '==' that.c == self.c end def <=> that p '<=>' that.c <=> self.c end def equal? that p 'equal?' that.c.equal? self.c end def eql? that p 'eql?' that.c.eql? self.c end end a = Obj.new b = Obj.new a.c = 1 b.c = 1 p [a] | ...
How Do I Select for Multiple Classes Using Nokogiri and Ruby
From a table element, I would like to select all rows that have the class even or the class odd. I tried the jQuery syntax: report.css("table.data tr[class~=odd even]").each{|line| parse_line_item(line)} but it threw an error, any help is appreciated, thanks. ...
background-fu pluggin unable to run ./script/generate background
I'm following this rdoc: http://rdoc.info/projects/ncr/background-fu and can't run ./script/generate background after installing background-fu as a Rails plugin: ./script/plugin install git://github.com/ncr/background-fu.git I'm getting following error: Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no...
Using the value of a variable as another variables name in Ruby
Hi, I'm just starting out in learning Ruby and I've written a program that generates some numbers and assigns them to variables @one, @two, @three etc. The user can then specify a variable to change by inputting it's name (e.g one). I then need to do something like '@[valueofinout] = asd'. How would I do this, and is there a better way ...
Ruby Net::SMTP - Send email with bcc: recipients
I would like to use Ruby Net::SMTP to send email. The routine send_message( msgstr, from_addr, *to_addrs ) works well in my code for sending email, but it is not clear from this API how to send email to a list of people that need to be blind copied (bcc:). Am I missing something, or is it just not possible with Net::SMTP? ...
Sinatra and Markaby: "Template Engine Not Found"
Using the standard gem for using Markaby with Sinatra, listed at http://www.sinatrarb.com/extensions-wild.html sudo gem install markaby Password: Successfully installed builder-2.1.2 Successfully installed markaby-0.5 2 gems installed sudo gem install sbfaulkner-sinatra-markaby -s http://gems.github.com Password: Successfully ins...
Best practice to handle non-english characters in Ruby?
My program file is encoded in UTF-8 so "abc".length == 3 but "åäö".length == 6. I realize that å, ä, ö, etc. are stored as two bytes in UTF-8, and that a Ruby String is a sequence of bytes (not characters), but it is annoying! Is there a best practice to work around this problem? ...
Ruby TCPSocket doesn't notice it when server is killed
I've this ruby code that connects to a TCP server (namely, netcat). It loops 20 times, and sends "ABCD ". If I kill netcat, it takes TWO iterations of the loop for an exception to be triggered. On the first loop after netcat is killed, no exception is triggered, and "send" reports that 5 bytes have been correctly written... Which in the ...
How do I translate Ruby's IO.popen calls into Python's subprocess.Popen calls?
I've read the documentation and I've tried lots of things in the REPL, and Googled, but I can't for the life of me understand how subprocess.Popen works in Python. Here is some Ruby code I am using: IO.popen("some-process") do |io| while(line = io.gets) # do whatever with line end end How do I translate this into Python using...
Substitute all matches with values in Ruby regular expression
Hi all, I'm having a problem with getting a Ruby string substitution going. I'm writing a preprocessor for a limited language that I'm using, that doesn't natively support arrays, so I'm hacking in my own. I have a line: x[0] = x[1] & x[1] = x[2] I want to replace each instance with a reformatted version: x__0 = x__1 & x__1 = x__2 ...
Detect similar sounding words in Ruby
I'm aware of SOUNDEX and (double) Metaphone, but these don't let me test for the similarity of words as a whole - for example "Hi" sounds very similar to "Bye", but both of these methods will mark them as completely different. Are there any libraries in Ruby, or any methods you know of, that are capable of determining the similarity bet...
How do I write user-specific configuration into a rails app?
Hi all, What is the current practice like to write user-specific configuration settings into a rails application? For example, privacy settings in a social networking application. I know application-wide settings can be stored in a .yml file in config/ but what about users? ...
Ruby SerialPorts
I'm using the ruby serial port gem. After I open up the port I send the data I want like this. sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s It doesn't work, but if I put it in a loop of around 200 times: 200.times do sp.write [200.chr, 30.chr, 7.chr, 5.chr, 1.chr, 2.chr, 0.chr, 245.chr].to_s end It ...
Interconversion between decimal and any other base-n number system
Hello there, I have written some general functions to convert between decimal and any other base-n number system(n<=36 for now) and vice-versa. Don't want to make things messy here so i have posted the code here. Could anybody suggest any better way for this? May be more effective and Rubyish? Thanks ...