From: Paul Lutus <nospam@...>
Date: 2006-09-07T10:50:07+09:00
Subject: Re: multi-def docs?

YAD wrote:

> I thought Ruby allows you to define similar functions in parallel by
> putting the parts that differ together in square brackets.  Is there
> some online documentation for that?  I haven't been able to find it yet.

What follows is only approximately like what you are describing. Maybe it
will give you some ideas:

#!/usr/bin/ruby

class Demo
   def initialize
      @op_hash = {
         "+" => Proc.new { |y,x| y + x },
         "-" => Proc.new { |y,x| y - x },
         "*" => Proc.new { |y,x| y * x },
         "/" => Proc.new { |y,x| y / x }
      }
   end

   def perform(y,x,m)
      @op_hash[m].call(y,x)
   end
end

demo = Demo.new

puts demo.perform(1.0,3.0,"/")

Output: 0.333333333333333

-- 
Paul Lutus
http://www.arachnoid.com