December 2002
Intermediate to advanced
1232 pages
56h 38m
English
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Name
$*
Synopsis
The $* operator is a wildcard operator. It is used
to match zero or more tokens in the workspace. One handy use for it
is to honor a pair of angle braces, regardless of whether that pair
has something between them. The following LHS, for example, will
match <>, or
<wash>, or even
<some.big.long.domain>:
R < $* > ...
But because $* can match an unexpected number of
tokens, it is wise to understand minimum matching before using it.
See Section 18.6.1 for a discussion of minimum matching
and the backup and retry process.
Note that the $* operator can be used only on the
LHS of rules, and can be referenced by an RHS
$digit operator.
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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.