August 2011
Intermediate to advanced
552 pages
23h 48m
English
Content preview from Advanced Mac OS X Programming: The Big Nerd Ranch GuideBecome 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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For the More Curious: Assertions
Assertions are a programming technique where tests are added for conditions that cannot happen. The program kills itself when it enters such an impossible state, dumping a core file if it can.
The assert macro
assert (expression)evaluates the expression. If the expression is zero (false), the process is terminated, a diagnostic message is written to the standard error stream, and the abort() function is called, which terminates the program by raising the signal SIGABRT. Because most programmers use asserts for debugging purposes, you can compile them out of a production program by using the preprocessor flag -DNDEBUG. Be aware of side effects due to code called in the assert() macro. This could cause your program ...
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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.