From: Mike Stok <mike@...>
Date: 2013-06-23T00:18:21+09:00
Subject: Re: Load error - Std lib class Dir


On 2013-06-22, at 9:37 AM, Love U Ruby <lists@ruby-forum.com> wrote:

> I am required to use the class -
> http://www.ruby-doc.org/stdlib-2.0/libdoc/tmpdir/rdoc/Dir.html
> 
> But I am getting error - Why so?
> 
> require "dir"
> 
> Dir.tmpdir
> # =>
> # ~>
> /home/kirti/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in
> `require': cannot load such file -- dir (LoadError)
> # ~>  from
> /home/kirti/.rvm/rubies/ruby-2.0.0-p0/lib/ruby/site_ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in
> `require'
> # ~>  from -:1:in `<main>'

In the documentation in the URL you posted it says that the tmpdir stuff is in the file tmpdir.rb, so you should try

#!/usr/bin/env ruby

require 'tmpdir'

puts Dir.tmpdir    
__END__

Which outputs results like:

ratdog:tmp mike$ ruby try.rb
/var/folders/f3/6zk_yypd73jc88n1p6ww2f_00000gn/T

tmpdir adds a couple of methods to the core Dir class, you can see this by doing something like:

#!/usr/bin/env ruby

dir_methods = Dir.methods
puts Dir.methods.count

puts "requiring tmpdir..."
require 'tmpdir'

puts Dir.methods.count
puts Dir.methods - dir_methods      
__END__

Hope this helps,

Mike

-- 

Mike Stok <mike@stok.ca>
http://www.stok.ca/~mike/

The "`Stok' disclaimers" apply.