From: cremes.devlist@...
Date: 2006-12-05T02:57:37+09:00
Subject: Re: help, my  'case/when' code doesn't work

 
On Monday, December 04, 2006, at 11:44AM, "Stefano Crocco" <stefano.crocco@alice.it> wrote:
>Alle 18:33, luned� 4 dicembre 2006, cremes.devlist@mac.com ha scritto:
>> def case_test(obj)
>>   print "testing via case... "
>>   case obj.class
>>   when Array
>>     puts "obj is a #{obj.class}"
>>   when String
>>     puts "obj is a #{obj.class}"
>>   else
>>     puts "obj is unknown: #{obj.class}"
>>   end
>> end
>
>Your code will call Array===obj.class. According to ri aClass===anObject 
>returns true if anObject is an instance of aClass or of one of its 
>descentents (which more or less means if anObject.is_a?(aClass) returns 
>true). Because of this, all your 'when' statements will fail, because 
>obj.class is not an instance of Array or String. To do what you want, you 
>should substitute 
>
>  case obj.class
>
>with
>
>  case obj

Sheesh! I *knew* it was something easy. I feel like a dope...

cr