From: nrolland <nicolas.rolland@...>
Date: 2006-12-03T01:30:08+09:00
Subject: On Modules and require in general  / on ActiveSupport in particular

I dont get how :

-> I require_gem ActiveSupport and it's not loading any ActiveSupport
module
-> I require_gem Rails             and it's       loading
ActiveSupport module.....

Any clue appreciated.


Here is a transcript of my irb session
#initial state
require 'rubygems'
=> true
a = Module.constant

# I load a gem, the Modules gets loaded
require_gem 'needle'
=> true
b = Module.constant
b - a
=> ["Queue", "Needle", "Mutex", "ScanError", "Logger", "StringScanner",
"SizedQueue", "Monitor", "MonitorMixin", "ConditionVariable"]

# I load ActiveSupport, nothing gets loaded !!!!!
require_gem 'activesupport'
=> true
c = Module.constant
c -b
=> []


# I load Rails, ActiveSupport is loaded. where is th magic going on ?
require_gem 'rails'
=>true
d = Module.constant
(d - c).find_all { |t| t.downcase.include?("active")}
=> ["ActiveSupport", "ActiveRecord"]