From: Alfonso Caponi <alfonso.caponi@...>
Date: 2009-12-22T22:53:29+09:00
Subject: Re: newbie: if is not null else...

Rick Denatale wrote:
> On Tue, Dec 22, 2009 at 8:32 AM, Alfonso Caponi
> <alfonso.caponi@gmail.com> wrote:
>> Hi forum,
>>
>> how can I replace this PHP syntax with Ruby?
>>
>> $x = (isset($x) and !empty($x)) ? $x : '-';
>>
>> I would like assign a default value if $x is Null.
> 
> The approximate Ruby idiom would be
> 
> $x ||= '-'
> 
> The only caveat is that this would (re)assign the value if $x were
> either nil or false. This is usually not an issue, but if so then you
> could use
> 
> $x = '-' if $x.nil?
> 

Thank you very much Rick. Using:

x = '-' if x.nil?

I've x = Null again.. :(

It seems works with

if (x.to_s =~ /Null/)
 x = '-'
end

but I don't think is the best way to write it :(

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