To migrate to rails 3.1 edge, you should 1) remove in your development.rb :

config.action_view.debug_rjs = true

2) gem ‘rails’, :git => ‘git://github.com/rails/rails.git’

How to install rdebug with a fresh rvm installation of 1.9.1-p378 ruby ?

simply do :

I am pretty sure 2 years from now, developers will not anymore do any internet explorer development : That’s why :

1. Mobile companies never stop from gaining more and more internet market share,