August 2002
Beginner
1122 pages
22h 1m
English
Content preview from C++: A Dialog Programming with the C++ Standard LibraryBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Reference Counting
The reason we have to set m_Count to 1 in the UndatedStockItem variable pointed to by m_Worker is that we're going to keep track of the number of StockItems that are using that UndatedStockItem worker object, rather than copy the worker object every time we copy a StockItem that points to it, as we did with our string class. This approach to sharing an object is called reference counting.
The general idea of reference counting is fairly simple, as most great ideas are (after you understand them, at least). It's inefficient to copy a lot of data whenever we set one variable to the same value as that of another; copying a pointer to the data is much easier. Even so, we have to consider how we will know when we can delete the ...
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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.