What is output of following statements?
1) "".nil? == "".empty? && "".blank? == "".empty?
2) !"".nil? == "".empty? && "".blank? == "".empty?
3) nil.nil? == nil.empty? && nil.blank? == nil.empty?
4) !"".blank? == "".present?
5) "".any? == !"".empty?
6) " ".blank? == " ".empty?

For the String class, what's the difference between '#slice' and '#slice!'?

Which controller actions (by default) are best suited to handle the GET HTTP request?

Rails automatically requires certain files in an application. Which of the following files are automatically included without an explicit 'require' being necessary?

Which is true about writing tests for a Ruby on Rails application?

What is the behavior of class variables with subclasses?

The best practice says:

How you can load your database with seeded data

MVC stand as:

How to add a coffeescript file, follow the Asset Pipeline rules, somewhere in the 'view'?

Where you define the gems used in a Ruby on Rails application?