From: Joel VanderWerf <vjoel@...>
Date: 2006-08-25T03:20:56+09:00
Subject: Re: Ruby search

Henry Savr wrote:
> I want to manage the way how Ruby searches modules to load. I found, 
> that the $: variable is in charge, but it is read-only. Then I found 
> that RUBYLIB can be used to add directories.

The _variable_ is read only, but the _object_ that it refers to (an 
array of strings) is not frozen. You can modify the object:

irb(main):001:0> $: = 5
NameError: $: is a read-only variable
         from (irb):1
irb(main):002:0> $:.unshift "."
=> [".", "/usr/local/lib/ruby/site_ruby/1.8", 
"/usr/local/lib/ruby/site_ruby/1.8/i686-linux", 
"/usr/local/lib/ruby/site_ruby", "/usr/local/lib/ruby/1.8", 
"/usr/local/lib/ruby/1.8/i686-linux", "."]

Or you can use RUBYLIB to set $: for newly started ruby processes.

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407