From: dblack@...
Date: 2006-08-28T22:47:57+09:00
Subject: Re: Newbie : assign a value to a variable...

Hi --

On Mon, 28 Aug 2006, Harold Hausman wrote:

>> 
>> You can use the || (or) operator:
>>
>>    per_page = @params[:per_page] || 20
>> 
>> 
>> David
>> 
>
> I think you've got to be careful about your precedence there...
>
> irb(main):001:0> foo = nil or 20
> => 20
> irb(main):002:0> foo
> => nil
> irb(main):003:0> foo = (nil or 20)
> => 20
> irb(main):004:0> foo
> => 20
>
> Though, maybe it's just irb?

No, it's just "or", which I didn't use.  (Look more closely at my code
:-)


David

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