From: ts <decoux@...>
Date: 2002-07-27T21:53:16+09:00
Subject: Re: copying

>>>>> "B" == Benjamin Sommerfeld <benlebt@yahoo.de> writes:

B> in ftools.rb is  a method copy(sourcefile,destfile)

pigeon% ls [bc].rb
b.rb*
pigeon% 

pigeon% cat b.rb
#!/usr/bin/ruby
require 'ftools'
File::copy 'b.rb', 'c.rb'
pigeon% 

pigeon% b.rb
pigeon% 

pigeon% ls [bc].rb
b.rb*  c.rb*
pigeon% 

pigeon% head -12 lib/ftools.rb
class << File

  TOO_BIG = 1024 * 1024 * 2 # 2MB

  def catname from, to
    if FileTest.directory? to
      File.join to.sub(%r([/\\]$), ''), basename(from)
    else
      to
    end
  end

pigeon% 

 'class << File' means that ruby will define methods in the singleton class
 (i.e. a class method). This is why `self' must be the name of the class
 when you call ::copy



Guy Decoux