We've since created ActiveType which has a restricted subset of Virtus' features. It might be enough for your needs...
When a Ruby block or proc takes multiple parameters, and you call it with an Array, Ruby will unexpectedly splat...
An annoying part of using font icons is that the icons usually need to live in the DOM. This is...
In Ruby, classes and modules are called constants. This card explains how Ruby resolves the meaning of a constant.
Modern IRB has time measurement built in. measure # Enable measure :off # Disable Custom Should your version of IRB not offer...
Goal Within before_* Within after_* Cancel later callbacks throw :abort throw :abort Rollback the transaction throw :abort raise ActiveRecord::Rollback...
If you're still working on ruby 1.8, you should know that using SimpleDelegator is often prohibitively slow. I have...
Ruby publishes security issues and MRI updates on ruby-lang.org. Unfortunately there is no straight-forward way to subscribe to these...
Ubuntu 12.04 LTS x64, Ruby 1.8.7, Rails 2.13, PDFKit 0.5.4, Phusion Passenger Apache 2 I ran into this, when I...
After reading, you will know why and how runners.each(&:run) works. Here some tidbits: & can be quite confusing because it...
Today I ran into trouble installing therubyracer on Ruby 1.8. The installation failed with *** extconf.rb failed *** Could not create Makefile...
You're better off using debugger-ruby_core_source: gem install debugger-ruby_core_source If you can't do...
It is good programming practice to Don't Repeat Yourself (or DRY). In Ruby on Rails we keep our code...
So you're switching to PostgreSQL from MySQL? Here is some help... General hints on PostgreSQL \? opens the command overview...
The mysql2 gem in version 0.3.13 might break while compiling on older patch releases of Ruby 1.9.3 within rvm:
Do not use .rvmrc files to specify Ruby version and gemset configuration any longer, it's deprecated and not considered...
After running bundler / gem install I could not load nokogiri lately. It died with cannot load such file -- nokogiri/nokogiri.
Ruby's private keyword might do a lot less than you think. "private" does not apply to class methods defined...
RubyLTS is a long term supported fork of Ruby 1.8 that will continue to receive security updates for the forseeable...
The new exception_notification has awesome options like :ignore_crawlers => true and :ignore_if => lambda {...
...}. These options should be helpful...
Consul 0.9 comes with many new features to optimize powers that only check access to a given record. e.g. Power.current.post...
The linked page lists and explains global Ruby "dollar" variables, such as: $: (load path) $* (ARGV) $? (Last exit status) $$ (PID)
Ruby 1.9 brings a shorter way to define lambdas using the -> operator: twice = -> (x) { 2 * x } twice.call(5) # => 10
Next time you have to do more than trivial CSS changes on a project, you probably want to have live...