October 2018
Beginner
114 pages
2h 36m
English
Content preview from R Web Scraping Quick Start Guide
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Selecting unknown nodes
To select unknown/undefined nodes, it's good to use wildcards.
The following table shows some sample Xpath expressions and the results related to those expressions:
| Path Expression | Result |
|---|---|
| /publisher/* | This expression is used for selecting all of the child element nodes of publisher. |
| //* |
This expression is used for selecting all of the elements. |
| //title[@*] | This expression is used for selecting all of the title elements that have at least one kind of attribute. |
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.