From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-04-14T09:13:04+09:00
Subject: Re: Hpricot innerTEXT?


On Apr 13, 2007, at 10:48 PM, Brian Candler wrote:

> On Fri, Apr 13, 2007 at 10:40:05PM +0900, chickenkiller wrote:
>> doc = Hpricot(File.open("rdf.xhtml"))
>>
>> puts (doc/"item"/"dc:subject").inner_text
>> # html imported webpagedesign
>>
>> (doc/"item").each do |t|
>>    puts((t/"dc:subject").inner_text)
>> end
>> # html imported webpagedesign
>>
>> (doc/"item").each do |t|
>>    puts (t/"dc:subject").inner_text
>> end
>> # <dc:subject>html imported webpagedesign</dc:subject>
>> # rdf.rb:12: warning: don't put space before argument parentheses
>> # rdf.rb:12: undefined method `inner_text' for nil:NilClass
>> (NoMethodError)
>> # from rdf.rb:11:in `each'
>> # from rdf.rb:11
>>
>> I am wondering where the difference is between the two last blocks.
>> Any ideas?
>
> Hmm, looks like this should be something that can be replicated  
> without
> hpricot.
>
> $ cat x.rb
> x = 3
> puts (x-5).abs
>
> 1.times do
>   puts (x-5).abs
> end
> $ ruby -v
> ruby 1.8.4 (2005-12-24) [i486-linux]
> $ ruby x.rb
> x.rb:5: warning: don't put space before argument parentheses
> 2
> -2
> x.rb:5: undefined method `abs' for nil:NilClass (NoMethodError)
>         from x.rb:4
> $
>
> Congratulations, I think you've found a bug in the parser :-) I'll  
> post this
> example to ruby-core.
>
> Regards,
>
> Brian.
>
Inside the do-end or {} block, use this:
puts((x - 5).abs)
It is more explicit, but correct and works.

so,
>>>> (doc/"item").each do |t|
>>>>    puts (t/"dc:subject").inner_html
>>>> end
>>>>
will work as
(doc/"item").each do |t|
	puts((t/"dc:subject").inner_html
end