From: Josh Cheek <josh.cheek@...>
Date: 2011-06-14T18:57:15+09:00
Subject: Re: A way to find out when a constant gets defined?

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On Tue, Jun 14, 2011 at 4:52 AM, Ryan Davis <ryand-ruby@zenspider.com>wrote:

>
> On Jun 14, 2011, at 02:32 , Josh Cheek wrote:
>
> > # When I load irb with my app, Psych is somehow defined
> > $ bundle exec irb
> > ruby-1.9.2-p180 :001 > Psych
> > => Psych
> > ruby-1.9.2-p180 :002 > exit
>
> 6478 % gem19 which psych
> /Users/ryan/.multiruby/install/1.9.2-p136/lib/ruby/1.9.1/psych
>
> >> require 'psych'
> => true
> >> $".grep(/psych/i).map { |s| File.dirname File.dirname s }.uniq
> => ["/Users/ryan/.multiruby/install/1.9.2-p136/lib/ruby/1.9.1",
> "/Users/ryan/.multiruby/install/1.9.2-p136/lib/ruby/1.9.1/psych",
> "/Users/ryan/.multiruby/install/1.9.2-p136/lib/ruby"]
>
> Psych ships with 1.9
>
>
>
# Hmm. Yes, I have it too:
$ gem which psych
/Users/josh/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/psych

# But why can't I access it?
$ ruby -e 'require "psych"'
<internal:lib/rubygems/custom_require>:29:in `require': no such file to load
-- psych (LoadError)
from <internal:lib/rubygems/custom_require>:29:in `require'
from -e:1:in `<main>'

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