June 2008
Intermediate to advanced
986 pages
27h 8m
English
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Character Groups
For convenience, we can use character groups to stand for
groups of characters. Specifying L is
simpler than specifying all letters, particularly if you have to allow
for the many thousands of characters defined in the Unicode standard.
The character groups are used with the \p and \P
operators; \p{L} means all letters,
while \P{L} means everything except
letters. The character groups and their names are defined in the Unicode Character Database, available
online here: http://www.unicode.org/Public/UNIDATA/UCD.html.
The following lists are the character groups.
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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.