From: Bertram Scharpf <lists@...>
Date: 2009-07-17T12:14:38+09:00
Subject: Re: case statement puzzle

Hi,

Am Freitag, 17. Jul 2009, 07:01:07 +0900 schrieb Tom Cloyd:
> Bertram Scharpf wrote:
>> To apply the === operator you have to mention the variable
>> after the "case" keyword.
>>
>>   x = '1'
>>   case x
>>     when '0'      then puts '0'
>>     when '1'..'5' then puts '1'
>>   end
>>   
> Thanks...you're right, of course, and I soon learned that, in this morning 
> ruby exercise session. Very interesting!

Yes, learning is the only straight fun.

Returning to your initial problem: Maybe it could be a reasonable
solution to say

  if x.to_i.nonzero? then
    do_it_with x
  end

As I mention Fixnum#nonzero?: Furthermore, I'm convinced there
should be a corresponding String#notempty? method. And
Array#notempty?.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de