Which gem is used to install a debugger in Rails 3?

What exception cannot be handled with the rescue_from method in the application controller? e.g class ApplicationControllers < ActionController::Base rescue_from Exception, with: error_handler .......... end

What component of Rails are tested with unit tests?

Which of the following replaced the Prototype JavaScript library in Ruby on Rails as the default JavaScript library?

If a method #decoupage(n) is described as O(n^2), what does that mean?

What is green-threading?

What exception cannot be handled with the rescue_from method in the application controller? e.g class ApplicationControllers < ActionController::Base rescue_from Exception, with: error_handler .......... end

Which gem is used to install a debugger in Rails 3?

What is the output of the following code in Ruby? x= 'A' + 'B' puts x y= 'C' << 'D' puts y

Which of the following items are stored in the models subdirectory?

Which part of the MVC stack does ERB or HAML typically participate in?