Disqus - Latest Comments for pet3r

Re: Ruby on Rails Tutorials | Ruby Pond

pet3r — Mon, 05 Jan 2009 05:55:55 -0000

Thanks for the links - great stuff, not just for beginners!

Re: HTML Scraping with scRUBYt! for Fun and Profit

pet3r — Tue, 23 Dec 2008 03:41:11 -0000

Nokogiri is a lower-level tool (scRUBYt! is also built on Hpricot, and probably be switched over to Nokogiri soon).

Comparing Nokogiri to scRUBYt! doesn't make too much sense - yes, they both can be used to create scrapers, but the similarity stops there. Probably it didn't came across from the above article, since I was concentrating on the basics, but scRUBYt! does a lot of things under the hood - e.g. I could add crawling to paginated detail pages to the above code with 2 lines.

Also, in scRUBYt!, you can use Firefox as the agent so you can scrape AJAX pages (see http://www.rubyrailways.com... which is not possible with Nokogiri et al.

Of course there are times when I am using Hpricot / regexps for some quick and dirty scraping myself - however, a 20-30 line scRUBYt! script is much more quicker to create and maintain than a Nokogiri code that does the same.

Re: Thinking out of the Box with Enumerable#inject

pet3r — Thu, 11 Dec 2008 14:53:44 -0000

Indeed - the article is updated with this info.

Re: Thinking out of the Box with Enumerable#inject

pet3r — Thu, 11 Dec 2008 14:52:52 -0000

> The only reason assignment works is because `a += i` is an expression which returns `a + i

Yeah, I know, that's why I used it - it might be just me, but I find it more natural like this while I don't feel like I am doing a mistake in this case (not talking about inject()ing like this in general, jut about this case)

Re: Thinking out of the Box with Enumerable#inject

pet3r — Thu, 11 Dec 2008 14:50:42 -0000

Hmm, it reads more natural to me - and I am not using a temporary variable, a is the accumulator you have anyway.

Re: Thinking out of the Box with Enumerable#inject

pet3r — Thu, 11 Dec 2008 07:04:05 -0000

@Henrik: that's really cool! Hopefully we can update the article with this suggestion.

Re: Thinking out of the Box with Enumerable#inject

pet3r — Wed, 10 Dec 2008 23:18:10 -0000

Oh yeah, the good od to_proc hack - how could I forget :-)