From: "Ara.T.Howard" <ara.t.howard@...>
Date: 2006-02-03T05:29:10+09:00
Subject: [RCR] meaningful RUBY_VERSION#<=>



i'm sure something much more elegant could be made, but this summarizes desired
behaviour.


   harp:~ > cat a.rb
   class RubyVersion < ::String
     include Comparable
     def <=> other
       components <=> RubyVersion::new(other).components
     end
     def components
       scan(%r/\d+/).map{|c| Integer c}
     end
     def major
       components[0]
     end
     def minor
       components[1]
     end
     def tiny
       components[2]
     end
     module ::Kernel
       def RubyVersion *a, &b
         RubyVersion::new *a, &b
       end
       v = $VERBOSE
       $VERBOSE = nil
       ::RUBY_VERSION = RubyVersion(::RUBY_VERSION)
       $VERBOSE = v
     end
   end



   p RUBY_VERSION
   p RUBY_VERSION > "1.8.3"
   p RUBY_VERSION > "1.9.0"


   harp:~ > ruby a.rb
   "1.8.4"
   true
   false


kind regards.

-a

-- 
happiness is not something ready-made.  it comes from your own actions.
- h.h. the 14th dali lama