From: ara.t.howard@...
Date: 2006-04-14T04:26:21+09:00
Subject: Re: Question mark in attr_*

On Fri, 14 Apr 2006, Justin Collins wrote:

> This could be pretty handy...but I don't understand why you have the double 
> negation?
>>    define_method("#{sym}?") { !!instance_variable_get("@#{sym}") }

if you like having this check out traits - it does this automatically

   require 'traits'

   class C
     trait 't'
   end

   c = C.new

   c.t = 42
   p c.t #=> 42
   p c.? #=> true

   c.t 42 # same as c.t= 42

regards.

-a
-- 
be kind whenever possible... it is always possible.
- h.h. the 14th dali lama