From: Eric Hodel <drbrain@...7.net>
Date: 2006-02-19T05:24:46+09:00
Subject: Re: define_method fun

On Feb 17, 2006, at 7:32 PM, Patrick Ritchie wrote:

> Hi All,
>
> I just setup the following in one of my classes, I'll let the code  
> speak for itself:
>
> ["<", "<=", ">", ">=", "==", "<=>"].each do |op|
>  define_method(op) { |comparison| eval "#{self.order} #{op} # 
> {comparison.order}" }
> end
>
> Ruby continues to impress me with it's ability to do so much in so  
> few amazing readable lines of code.
>
> Are their any good reasons not to declare my op methods this way?  
> Is their an even more efficient way to achieve the same effect?

class YourClass

   include Comparable

   def <=>(other)
     self.order <=> other.order
   end

end

-- 
Eric Hodel - drbrain@segment7.net - http://segment7.net
This implementation is HODEL-HASH-9600 compliant

http://trackmap.robotcoop.com