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What are the differences between Autotools, Cmake and Scons?
... a painful experience to get an Autotools setup to build usable code for a Windows system. (While I've little use for Windows, it is a serious concern if you're developing purportedly cross-platform code.)
When it breaks, you're going to spend HOURS chasing your tail trying to sort out the things t...
What are the effects of exceptions on performance in Java?
... this already happens in the try statement. The throw statement needs to unwind the stack and restore the values of all registers (and possible other values in the VM). So try and throw are equally slow, and that is pretty slow, however if no exception is thrown, exiting the try block takes no time ...
How many GCC optimization levels are there?
... further optimizations
designed to reduce code size.
-Os disables the following optimization flags: -falign-functions -falign-jumps -falign-loops -falign-labels -freorder-blocks -freorder-blocks-and-partition -fprefetch-loop-arrays -ftree-vect-loop-version)
There may also be platform specific opti...
Performance optimization strategies of last resort [closed]
...t's hard to sample, so I give it 10 times as much work to do, but the following times are based on the original workload.
More diagnosis reveals that it is spending time in queue-management. In-lining these reduces the time to 7 seconds.
Now a big time-taker is the diagnostic printing I had been d...
How do I plot in real-time in a while loop using matplotlib?
...ause(0.05) to both draw the new data and it runs the GUI's event loop (allowing for mouse interaction).
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Detect if Visual C++ Redistributable for Visual Studio 2012 is installed
...e of these reg locations may be OS-dependent. I collected this info from a Windows 10 x64 box. I'm just going to go ahead and dump all of these redist versions and the reg keys I search for to detect installation.:
Visual C++ 2005
Microsoft Visual C++ 2005 Redistributable (x64)
Registry Key: HKL...
How to debug Lock wait timeout exceeded on MySQL?
...ile it waits for something non-MySQL-related to happen."
After re-re-reviewing the show engine innodb status log (once I'd tracked down the client responsible for the lock), I noticed the stuck thread in question was listed at the very bottom of the transaction list, beneath the active queries that...
Multi-gradient shapes
I'd like to create a shape that's like the following image:
5 Answers
5
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Should I use Vagrant or Docker for creating an isolated environment? [closed]
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The only reason you could want to use Vagrant is if you need to do BSD, Windows or other non-Linux development on your Ubuntu box. Otherwise, go for Docker.
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What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++?
...mulator)
I'll be updating these later:
Borland C++ Builder 6.0 on Windows XP
..04 a char is signed
but 'CHAR_MIN==SCHAR_MIN' is false.
..08 overshifting is okay
but '(1<<bits_per_int)==0' is false.
..09 overshifting is *always* okay
but '(1<<BITS_PER_INT)==0' is false....