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Compiling with g++ using multiple cores
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There is no such flag, and having one runs against the Unix philosophy of having each tool perform just one function and perform it well. Spawning compiler processes is conceptually the job of the build system. What you are probably looking for is the -j (job...
Which is the fastest algorithm to find prime numbers?
...ions for the SoE up to a range of about a billion. Much above that point, one generally needs to use page segmentation to overcome memory limitations, and that is where the SoA fails, taking rapidly increasing amounts of constant overhead with increasing range.
– GordonBGood
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What's “wrong” with C++ wchar_t and wstrings? What are some alternatives to wide characters?
...nverted to a wchar_t representation where every wchar_t represents exactly one codepoint:
Type wchar_t is a distinct type whose values can represent distinct codes for all members of the largest extended character set specified among the supported locales (22.3.1).
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RE error: illegal byte sequence on Mac OS X
...ct can be had ad-hoc for a single command only:
LC_ALL=C sed -i "" 's|"iphoneos-cross","llvm-gcc:-O3|"iphoneos-cross","clang:-Os|g' Configure
Note: What matters is an effective LC_CTYPE setting of C, so LC_CTYPE=C sed ... would normally also work, but if LC_ALL happens to be set (to something oth...
Why should I use version control? [closed]
...anted to review the history of some code?
Wanted to submit a change to someone else's code?
Wanted to share your code, or let other people work on your code?
Wanted to see how much work is being done, and where, when and by whom?
Wanted to experiment with a new feature without interfering with work...
Do subclasses inherit private fields?
...ublic are inherited by subclasses
declared in a package other than the
one in which the class is declared.
This addresses the exact question posed by the interviewer: "do subCLASSES inherit private fields". (emphasis added by me)
The answer is No. They do not. OBJECTS of subclasses contain...
MIN and MAX in C
...; \
__typeof__ (b) _b = (b); \
_a > _b ? _a : _b; })
Everyone says "oh I know about double evaluation, it's no problem" and a few months down the road, you'll be debugging the silliest problems for hours on end.
Note the use of __typeof__ instead of typeof:
If you are writing a...
Random data in Unit Tests?
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This kind of testing is called a Monkey test. When done right, it can smoke out bugs from the really dark corners.
To address your concerns about reproducibility: the right way to approach this, is to record the failed test entries, generate a unit test, which probes for the ...
What is the most frequent concurrency issue you've encountered in Java? [closed]
...possible issues but also in what issues are most common. So, please leave one specific answer of a Java concurrency bug per comment and vote up if you see one you've encountered.
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Unnecessary curly braces in C++?
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One possible purpose is to control variable scope. And since variables with automatic storage are destroyed when they go out of scope, this can also enable a destructor to be called earlier than it otherwise would.
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