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• Using a Windows Form with Ruby

  - by Gil Milow

  Is it possible to create a form on Windows using Ruby? I have a Ruby script and I would like to have an input form to ask for a user's password, then use this in the rest of my script. update: I have successfully done this with wxRuby, although it looks ugly. Shoes looks promising, I might look into that if I need to do this again..

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• Ruby Mobile Ports

  - by Nathan Campos

  I'm now learning Ruby because I saw it's a very powerfull language, but now I want to know what mobile ports of Ruby we have and for what devices. PS: I have a HTC S711, HP iPAQ Hx2, Nokia E61, Nokia N95, Palm T|X, Palm Z22, HP Jornada 720..., it's better if I can use it on these platforms, but I'm open to buy other devices, as I'm a mobile addict.

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• Ruby data structure to render a certain JSON format

  - by dt

  [{"id":"123","name":"House"}, {"id":"1456","name":"Desperate Housewives"}, {"id":"789","name":"Dollhouse"}, {"id":"10","name":"Full House"} ] How can I render to produce this JSON format from within Ruby? I have all the data from the DB (@result) and don't know what data structure to use in Ruby that will render to this when I do this: respond_to do |format| format.json { render :json = @result} end What data structure should @result be and how can I iterate to produce it? Thank you!

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• Ruby Canvas (GUI)

  - by Eugene

  Hi dear community! I need draw some lines/circles/rect/etc from ruby into something like canvas. I tried wxRuby and fxRuby but they are have no good examples to draw simple lines. Just tried to install qtruby on Windows and its fall cause of some number of errors. So: 1) Which API for ruby to draw on canvas I need? 2) Give me a little sample of it (full code please)? Sincerely Eugene

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• Converting regex statment for sentance extraction to Ruby

  - by DavidP6

  I found this regex statement on the wiki (http://en.wikipedia.org/wiki/Sentence_boundary_disambiguation) for Sentence boundary disambiguation, but am not able to use it in a Ruby split statment. I'm not too good with regex so maybe I am missing something? This is statment: ((?<=[a-z0-9)][.?!])|(?<=[a-z0-9][.?!]\"))(\s|\r\n)(?=\"?[A-Z]) and this is what I tried in Ruby, but no go: text.split("((?<=[a-z0-9)][.?!])|(?<=[a-z0-9][.?!]\"))(\s|\r\n)(?=\"?[A-Z])")

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• Ruby refactoring in VIM

  - by fregas

  Hi, I'm a big fan of Resharper in visual studio. It has some awesome refactoring tools, similar to what you get in Ecplipse for Java. Is there anything like this for Ruby? Better yet, is there a plugin or something into VIM that does refactoring for Ruby code like renaming all instances of a method or variable, renaming classes sitewide, etc? thanks, craig

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• What's the Ruby equivalent of Python's output[:-1]?

  - by Thierry Lam

  In Python, if I want to get the first n characters of a string minus the last character, I do: output = 'stackoverflow' print output[:-1] I can do the above in Ruby with: output = 'stackoverflow' output.reverse[1..output.length] Is there another way to perform this action in Ruby?

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• jRuby and Matz's Ruby on the same machine?

  - by erhard

  Is it possible to run jRuby and native ruby on the same machine? For example installing rake or gem under both it find's Matz Ruby extensions /usr/bin/gem or /usr/bin/rake The MRI gems and jruby gems are mixed up. Is there any experience in that constellation ? Thanks erhard

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• vampires == ruby devs and werewolves == ??

  - by Hanseh

  I've encountered a thread in one of the zend articles comparing Ruby developers to vampires == ruby == red == blood. Then mentioned something about werewolves? I'm just a bit inquisitive on what are werewolves compared to??

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• Image processing with barehands-ruby

  - by Erik Escobedo

  I want to know how to open and manipulate a simple image file in Ruby language. I don't need to do any advanced stuff, just things like open(), get_pixel() and put_pixel() and I don't wanna use any gem for doing that, but just to know the barehands-ruby way.

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• Ruby encoding problem

  - by Fossmo

  I'm just starting to learn Ruby and have a problem with encoding; require 'rubygems' require 'mechanize' agent = Mechanize.new agent.get('myurl.....') agent.page.search('#reciperesult a').each do |item| c = Mechanize.new c.get(item.attributes['href']) puts c.page.search('#ingredients li').text end The output text are shown like this h+©nsekj+©tt when it should have been shown like this hønsekjøtt. I'm using Ruby 1.8.7. Can anybody point me in the right direction?

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• floating point precision in ruby on rails model validations

  - by Chris Allison

  Hello I am trying to validate a dollar amount using a regex: ^[0-9]+\.[0-9]{2}$ This works fine, but whenever a user submits the form and the dollar amount ends in 0(zero), ruby(or rails?) chops the 0 off. So 500.00 turns into 500.0 thus failing the regex validation. Is there any way to make ruby/rails keep the format entered by the user, regardless of trailing zeros?

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• mingw32 Ruby Installer for Windows

  - by srboisvert

  How good is the new Ruby Installer for Windows? I asked before about why Ruby was so slow on windows and now I've seen some impressive benchmarks showing marked speed improvements with the minGW compilation used in the new installers and am curious how it has worked for people who have tried it? How many gems are broken for this version? Any big ones you have been bit by not on this list?

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• How to output binary data to a socket with Ruby

  - by Earlz

  Hello I have a very simple HTTP ruby server. I want it to simply server a PNG image. So I sent headers like image/png but I think that Ruby is converting the image data to a string first. Here is my relevant code webserver = TCPServer.new('127.0.0.1', 20001) while (session = webserver.accept) #.... file = File.open("tmp_testserve.png", "rb") contents = file.read file.close session.print @content session.close #.... Is this what is happening?

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• calling ruby with ajax

  - by danwoods

  Hello all, I'm wanting to check a ruby session variable via ajax. I'm familiar with ajax calling php, is calling a ruby file similar?

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• How to assert on number of html table rows in ruby using capybara + cucumber

  - by Neil

  I am trying to get to grips with BDD web development in Ruby using cucumber + capybara and I am stuck at what should be an easy task - just to check the number of rows in a table. Something along the lines of: page.should have_xpath("//table[@id='myTable']") find("//table[@id='myTable']/tr").length.should = 3 But this doesn't work and I can't find a way to assert against the table length. Any ideas anyone (please be easy on me tho' I'm a ruby nooby) Thanks in advance Neil

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• Rsync: pure Ruby implementation?

  - by peter

  I have a Rsync program Deltacopy with an executable as client and server but would like to replace this if possible with a pure Ruby implementation of Rsync. I found gems like six-rsync and rsync-update but they seem to be no general implementations. I'm looking for a pure Ruby solution, so no executables involved and preferably runnable on multiple OS. If possible a simple sample would be great. I only look for Rsync, no other transfer or backup solutions please.

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• Method to parse HTML document in Ruby?

  - by Harish

  like DOMDocument class in PHP, is there any class in RUBY (i.e the core RUBY), to parse and get node elements value from a HTML Document.

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• Best Editor or IDE for Ruby?

  - by Prakash

  I've heard so much about Textmate - The Missing Editor for Mac and that it is the best one for Ruby. What is your choice? And what is the best Ruby editor on Windows? E?

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• Python or Ruby for webbased Artificial Intelligence?

  - by Pieter Kubben

  A new web application may require adding Artificial Intelligence (AI) in the future, e.g. using ProLog. I know it can be done from a Java environment, but I am wondering about the opportunities with modern web languages like Ruby or Python. The latter is considered to be "more scientific" (at least used in that environment), but using Google there seems to be a preliminary ProLog implementation for both. Any suggestions on modern (open source) web languages (like Python or Ruby) in combination with AI?

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• Running a Ruby Program as a Windows Service?

  - by Kyle Burton

  Is it possible to run a ruby application as a Windows Service? I see that there is a related question which discusses running a Java Application as a Windows Service, how can you do this with a Ruby application?

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• main vs initialize in Ruby

  - by Dave

  Okay, so I've looked through a couple of my ruby books and done some googling to no avail. What is the difference between main and initialize in Ruby? I've seen code that uses class Blahblah def main some logic here end #more methods... end and then calls it using Blahblah.new. Isn't new reserved only for initialize? if not, then what's the difference between the two?

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• Ruby in DOS CLI, How to do?

  - by Daniel

  I see in a lot of the tutorials and how to pages, they use the following, or something similar ruby C:\test.rb Which would parse test.rb to the interpreter and ... execute the script. But how is this done a on a windows? Ruby isn't a recognized internal command (as per the DOS output)? I know how to do all these things on Linux, and its as simple as... alas Windows is completely confusing at times :)

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• Ruby or PHP or Php Framework?

  - by the_

  I am starting a website and am wondering if I should go with PHP, a php framework, or ruby on rails? I want to make a website fast, easiest and without a big learning curve. I already know a little bit of php and a little ruby on rails...But which would be best? OK so to clarify more on the topic of what my site will be, It's basically a Classified Ads website that needs to have a user login, ability to post classifieds, and categorizing, and basically anything else a classified website has.

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• Reading lists from a file in Ruby

  - by Gjorgji

  Hi, I have a txt file which contains data in the following format: X1 Y1 X2 Y2 etc.. I want to read the data from this file and create two lists in ruby (X containing X1, X2 and Y containing Y1, Y2). How can I do this in Ruby? Thanks.

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