From: Mark Wilden <mark@...>
Date: 2008-05-29T02:57:52+09:00
Subject: Re: The duck's backside


On May 28, 2008, at 8:24 AM, Eleanor McHugh wrote:

> 	doit a, b, c = nil
> 		raise ArgumentError, "needs exactly one additional argument" if b  
> && c
> 		v = b || c
> 		raise ArgumentError, "need a numeric parameter" unless  
> v.respond_to?(:to_int)
> 		@post "first=#{a}&" + (b.nil? ? "second=ignored&third=#{v}" :  
> "second=#{v}&third=ignored")
> 	end

This looks like a great solution!

But if you want to check for numeric parameters, would it be better  
just to use Numeric === v ? I know this isn't the ducky way, but it  
certainly seems more "intentional."

///ark