Marek Lipka questions

Marek Lipka answers

• module extending other modules in Ruby
• Rails Checkbox not working - no error when submitting form
• What does `rails spec` do that `rspec` does not?
• How to pass on splat arguments in Ruby
• Rails 4 - Do not scope if conditions
• Error :The action 'show' could not be found for PostsController"
• How do I upgrade the Ruby version of my project?
• Ruby idiomatic way to return a boolean
• Why rails is generating empty models?
• Complex number literal