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C++ performance challenge: integer to std::string conversion

...--- 10.230 s ergosys: 101.42 MB/sec --- 9.860 s MSVC 2010 64-bit /Ox on Windows 7 64-bit, Core i5 hopman_fun: 127 MB/sec --- 7.874 s hopman_fast: 259 MB/sec --- 3.861 s voigt: 221.435 MB/sec --- 4.516 s user_voigt_timo: 195.695 MB/sec --- 5.110 s timo: 253.165 MB/sec --- 3.950 s user: 212....
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How do Mockito matchers work?

...you interact with Mockito or a mock, and has to accept matchers without knowing whether they're used immediately or abandoned accidentally. In theory, the stack should always be empty outside of a call to when or verify, but Mockito can't check that automatically. You can check manually with Mockito...
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What is private bytes, virtual bytes, working set?

I am trying to use the perfmon windows utility to debug memory leaks in a process. 4 Answers ...
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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...
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How do Trigonometric functions work?

... with Chebyshev, which means faster performance) Range reduction is a huge win. This is because the contribution of higher order polynomials shrinks down when the interval of the approximation is smaller. If you can't get away with range reduction, your coefficients need to be stored with more preci...
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How do I find where an exception was thrown in C++?

...and often is, located in a different function/method than the point of throwing. It has also been pointed out to me in the comments (thanks Dan) that it is implementation-defined whether or not the stack is unwound before terminate() is called. Update: I threw together a Linux test program called t...
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Using @property versus getters and setters

... The short answer is: properties wins hands down. Always. There is sometimes a need for getters and setters, but even then, I would "hide" them to the outside world. There are plenty of ways to do this in Python (getattr, setattr, __getattribute__, etc..., ...
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Why should I avoid using Properties in C#?

... write-only; field access is always readable and writable. This is a win for properties, since you have more fine-grained control of access. A property method may throw an exception; field access never throws an exception. While this is mostly true, you can very well call a method on...
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What do 'statically linked' and 'dynamically linked' mean?

... form an executable. The distinction is made for, among other things, allowing third party libraries to be included in your executable without you seeing their source code (such as libraries for database access, network communications and graphical user interfaces), or for compiling code in differe...
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How to change the output color of echo in Linux

... to the terminal's default tput bel # Play a bell With compiz wobbly windows, the bel command makes the terminal wobble for a second to draw the user's attention. Scripts tput accepts scripts containing one command per line, which are executed in order before tput exits. Avoid temporary f...