June 2004
Intermediate to advanced
319 pages
12h 58m
English
Content preview from Version Control with Subversion
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Appendix A: Subversion for CVS Users
Here’s what this means to you, as a former CVS user:
• The
svn add and svn delete commands work on directories now, just as they
work on files. So do
svn copy and svn move. However, these commands do not
cause any kind of immediate change in the repository. Instead, the working
items are simply scheduled for addition or deletion. No repository changes hap-
pen until you run
svn commit.
• Directories aren’t dumb containers anymore; they have revision numbers like
files. (Or more properly, it’s correct to talk about directory foo/ in revision 5.)
Let’s talk more about that last point. Directory versioning is a hard problem; because
we want to allow mixed-revision working copies, there are some limitations on how
far we can abuse this model.
From a theoretical point of view, we define revision 5 of directory foo to mean a spe-
cific collection of directory entries and properties. Now suppose we start adding and
removing files from foo, and then commit. It would be a lie to say that we still have
revision 5 of foo. However, if we bumped foo’s revision number after the commit,
that would be a lie too; there may be other changes to foo we haven’t yet received,
because we haven’t updated yet.
Subversion deals with this problem by quietly tracking committed ...
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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.