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• Ruby Gem LoadError mysql2/mysql2 required

  - by Kalli Dalli

  Im trying to setup my rails server on OSX 10.8 but I can't get my rails server to run. - Currently Im using a Zend Server with mysql 5.1. - I also have istalled brew and brew mysql. - And I used: gem install mysql2 -- --srcdir=/usr/local/mysql/include --with-opt-include=/usr/local/mysql/include the server worked already but now, I always get this…

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• Ruby GUI (non-complex layouts)

  - by Ruby Novice

  I've done quite a bit of research on Ruby GUI design, and it appears to be the one area where Ruby tends to be behind the curve. I've explored the options of MonkeyBars, wxRuby, fxRuby, Shoes, etc. and was just wanted to get some input from the Ruby community. While they're definitely usable, the development on each seems to have fallen off.…

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• I Can't Get Ruby on Rails + Passenger + Apache to Work

  - by Luke Crowe

  I'm sorry if this is a stupid question, but I can't get Ruby on Rails to work on my Apache server. I'm using Phusion Passenger (mod_rails, mod_rack) for app deployment. Here is my RoR-specific configuration code in my website's Apache configuration file: Alias /rails /var/www/syyborg.com/ruby/blog/public <Directory…

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• Unicorn installation error on Debian 5

  - by Luc

  I am running ruby1.9 on Debian 5, and did not manage to install 'unicorn' with rubygems. I got this error and do not really know how to solve it. Do you have any idea of the possible root cause ? > gem install unicorn Building native extensions. This could take a while... ERROR: Error installing unicorn: ERROR:…

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• Using Ruby on share web hosts

  - by Parhum

  We are developing a Wordpress theme and we are going to publish it on themeforest.com. We are using Sass(scss Syntax) as our CSS Preprocessor and we need to compile it on server side. We have two solutions: Use phpsass which is a php script(but it has some bugs) Use Ruby Compiler which most of wordpress plugins use…

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• Ruby installed on Ubuntu 10.10 slow on one machine but not other

  - by Aaron Jensen

  I have a machine that was provisioned several months ago. RVM was used to install ruby 1.9.3-p125 as well as 1.9.3-p125-perf. When I compared raw ruby performance to another identical machine the older machine smoked them. For example: ================================================================================…

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• Missing functions in ruby 1.8

  - by Adrian

  I have a ruby gem that I developed with ruby 1.9, and it works. With ruby 1.8, though, it says this when I try to run it: dyld: lazy symbol binding failed: Symbol not found: _RBIGNUM_SIGN Referenced from: /Users/Adrian/Desktop/num_to_bytes/ext/num_to_bytes/num_to_bytes.bundle Expected in: flat namespace dyld:…

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• Why do people say that Ruby is slow?

  - by stephen murdoch

  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…

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• What should a Python developer know while learning Ruby?

  - by C J

  I have been a Python programmer for about 18 months, consisting of one internship and a few side projects, and I consider myself pretty comfortable in the language. However, there seems to be a lot of attention on Ruby in the programming field, but not a lot on Python anymore. So in learning Ruby, are…

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• Force ruby to use dbi Gem instead of dbi in site_ruby

  - by sutch

  I'm using: Windows 7 Ruby 1.8.6 One-Click Installer DBI version 0.4.3 installed using RubyGems What I see when executing these commands: C:ruby -v ruby 1.8.6 (2008-08-11 patchlevel 287) [i386-mswin32] C:gem -v 1.3.1 C:ruby -r rubygems -r dbi -e "puts DBI::VERSION" 0.2.2 …

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• Common Ruby Idioms

  - by DanSingerman

  One thing I love about ruby is that mostly it is a very readable language (which is great for self-documenting code) However, inspired by this question: http://stackoverflow.com/questions/609612/ruby-code-explained and the description of how ||= works in ruby, I was thinking about the ruby idioms I don't…

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• Installing Ruby Gems behind a Proxy

  - by jjr2527

  It appears this topic has been covered a few times before, but those solutions have only gotten me so far. I now have my sources properly updated and I am able to query for gems without an error but I keep getting empty results for my searches. I installed rubysspi and copied over the spa.rb file as…

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• rbenv not changing ruby version

  - by user1443338

  So i installed rbenv according to the github directions. I am running OSX but i have tried this on a Ubuntu 12.04 VM and got the same results. The following is what i get in my terminal when i try to change ruby versions: rbenv versions * 1.9.3-p0 (set by /Users/user/.rbenv/version) 1.9.3-p125 rbenv…

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• I can't generate migrations - "illegal route the controller must be specified" - where am I going wr

  - by ro

  Background: i'm using InstantRails 2.0 I'm wanted to add a new column to an existing table using the following syntax: ruby script/generate migration add_fieldname_to_tablename fieldname:string So I tried ruby script/generate migration add_invites_to_user invites:integer ruby script/generate…

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• Explicit return from a Ruby method - implementation hiding, reuse and optimisations.

  - by Chris McCauley

  Hi, Rather than allowing a Ruby method to blindly return the last statement evaluated, is there any advantage to returning nil explicitly? In terms of implementation hiding and reuse, it seems dangerous to blindly allow the last expression evaluated to be returned - isn't there a danger that a…

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• xapian-full installed on mac os x snow leopard but failed with dlopen LoadError

  - by goodwill

  Since I have tried to install xapian but failed, I try another alternative with xapian-full. Installation seems goes well, but when I try to write code with that I got toasted with error message again: irb(main):001:0> require 'xapian' LoadError:…

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• Explicit return form a Ruby method - implementation hiding, reuse and optimisations.

  - by Chris McCauley

  Hi, Rather than allowing a Ruby method to blindly return the last statement evaluated, is there any advantage to returning nil explicitly? In terms of implementation hiding and reuse, it seems dangerous to blindly allow the last expression…

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• How can I install Ruby on Rails 3 on OSX?

  - by Oluf Nielsen

  Hey i got an White Macbook and, has to go in 10 hours to a conference. And I'm having a lot of problems. First, I wanted to have Rails 3, so I used MacPorts to install Ruby 1.8.7. Tt worked well ;) So now I was thinking I should install…

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• Does ActiveRecord make Ruby on Rails code hard to test?

  - by Erik Öjebo

  I've spent most of my time in statically typed languages (primarily C#). I have some bad experiences with the Active Record pattern and unit testing, because of the static methods and the mix of entities and data access code. Since the…

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• Simplest possible rack app -> permission error

  - by 7stud

  Here's the program(1.rb) blah blah blah blah blah blah: require 'rack' my_rack = lambda { |env| [200, {}, ["Hello. The time is: #{Time.now}"]] } handler = Rack::Handler::WEBrick handler.run(my_rack, :PORT => 12_500) Here's the…

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• How Well Should I Know Ruby Before I Start Learning Rails?

  - by Matt

  How well should I know Ruby before I begin Rails?

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• What does !! mean in ruby?

  - by Cameron

  Just wondering what '!!' is in ruby. thanks!

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• How can I set the Rails environment for my somewhat stand alone Ruby script?

  - by Nick

  I have a Ruby script in my Rails app that I use to load some data from Twitter. In the future I will make it an automatic background process, but for now I run it manually like: ruby /lib/twitter/twitterLoad.rb In order to use the…

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• What's a good way to set up a development environment on OS X for ruby, rails, and git?

  - by Ein2015

  I'm going to start development on a web app using ruby, rails, probably either postgres or mysql, and most likely apache. I'll be using a git repository with the master repo on another server. I've searched through stackoverflow and…

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• Ruby Koans 202: Why does the correct answer give a syntax error?

  - by hlh

  I'm working through the about_classes.rb file in the Ruby Koans, and have hit a brick wall with the "inside_a_method_self_refers_to_the_containing_object" test. Here's the code: class Dog7 attr_reader :name def…

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