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Is optimisation level -O3 dangerous in g++?
... and are marked accordingly in the manpage. As such it is generally a good idea to use -O3 for generating fast code, and only fall back to -O2 or -Os (which tries to optimize for code size) when appropriate (e.g. when a profiler indicates L1I misses).
If you want to take optimization into the extre...
The thread has exited with code 0 (0x0) with no unhandled exception
... which returns with a huge amount of defunct processes. I have not a clear idea about this server works (and which are its tasks) but I suppose that the aforementioned threads could impact server behavior.
– Gionata
Sep 13 '12 at 21:12
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Using only CSS, show div on hover over
... the <a> inside the same parent display:block. It might be a better idea to select by .class-name or by #id. Otherwise, good post.
– Nate
Jun 6 '12 at 22:59
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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Combining a few ideas from previous posts, here's a solution that works even for nested constructions (tested in GCC4.6):
template <typename T, typename ...Args>
std::array<T, sizeof...(Args) + 1> make_array(T && t, Args...
How to set up Spark on Windows?
... Spark and Scala in Windows. I first tried Windows Ubuntu Bash. Not a good idea! Maybe if you have the latest creators update (Ubuntu 16), but otherwise there's a ton of errors and network issues.
– Tom
Aug 24 '17 at 22:48
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How do you split a list into evenly sized chunks?
...y use list comprehension instead of writing a function, though it's a good idea to encapsulate operations like this in named functions so that your code is easier to understand. Python 3:
[lst[i:i + n] for i in range(0, len(lst), n)]
Python 2 version:
[lst[i:i + n] for i in xrange(0, len(lst), n...
Should try…catch go inside or outside a loop?
... null, and generally I don't like having multiple returns, but you get the idea.
On the other hand, if you want it to just ignore the problems, and parse whatever Strings it can, you'd put the try/catch on the inside of the loop like this:
public static ArrayList parseAll2(String[] numberStrings){...
JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
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I disagree with these ideas, simply because Python backend > Java frontend should be camelCase, but then you add Python frontend and you have compromised backend and one frontend. It should be how backend has it by "standard". Frontend parsers ...
How to start nginx via different port(other than 80)
...un netstat, still there is something listening on port 80. Do you have any idea?
– Mustafa Chelik
Oct 31 '16 at 22:38
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When should std::move be used on a function return value? [duplicate]
... std::array that are expensive to move, or for templates where you have no idea whether moves are cheap or not, you're more likely to be bothered worrying about it.
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