OCRA (One-Click Ruby Application) builds Windows executables from Ruby source code. The executable is a self-extracting, self-running...
Controller responses often include Javascript code that contains values from Ruby variables. E.g. you want to call a Javascript function...
How to get a backtrace from a running Ruby process: Ruby 2.6 # First, find out the PID of your Ruby...
TL;DR {} binds stronger than do … end (as always in Ruby, special characters bind stronger than words) Demo
This card needs to be updated for Rails 3+. Since there is no --debugger flag you need to run:
The following two hints are taken from Github's Ruby style guide: If your regular expression mentions a lot of...
This will give you the string that appears most often in an array: names = %w[ foo foo bar bar bar...
Capybara has a global option (Capybara.ignore_hidden_elements) that determines whether Capybara sees or ignores hidden elements.
After you configured your ODBC describe in Fix [RubyODBC]Cannot allocate SQLHENV when connecting to MSSQL 2005 with Ruby 1.8.7...
I followed this nice guide Connecting to MSSQL with Ruby on Ubuntu - lambie.org until I ran in the following errors...
Nice article to educate your non-geek girlfriend/boyfriend about the joys of programming.
Pour color on your Rails console with awesome_print. Turn confusing long strings into formatted output. Have objects and classes...
Install libreadline: sudo apt-get install libreadline-dev Reinstall the ruby and tell rvm where to find readline
Your current ruby must be Ruby Enterprise. gem install passenger passenger-install-apache2-module Edit your httpd.conf according to the...
When you are calling a method that may raise an exception that you don't care about, you might think...
REST Client is a nice, simple HTTP client library for Ruby. When you do a simple GET request like that...
Copy the attached file to config/initializers/indent_string.rb and you can say "foo".indent(4) # " foo" Note you will find many simpler...
Imagine you have a piece of code that tries to send a request to a remote server. Now the server...
ProgressBar is a simple Ruby library for displaying progress of long-running tasks on the console. It is intended to...
Gem to get Ruby 1.9 features in Ruby 1.8.
Code coverage for Ruby 1.9 with a powerful configuration library and automatic merging of coverage across test suites.
This note summarizes the ruby exception hierarchy. Exception NoMemoryError ScriptError LoadError NotImplementedError SyntaxError SignalException Interrupt Timeout::Error # < ruby 1.9.2 StandardError...
Using .downcase or .upcase on strings containing umlauts does not work as expected in Ruby versions before 2.4. It leaves...
When selecting records in a date range, take care not to do it like this: start_date = Date.parse('2007-05...