Things I learned from rails src

rails_edu.md

1. see a selection of routes

$ rake routes CONTROLLER=foo

2. remove heredoc indenting

require 'active_support/core_ext/string'

def hello
  string = <<-eos.strip_heredoc
    hello world
  eos
end

puts hello 

#=> 'hello world'
# hey, it properly removed the source code indenting!