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How to get current timestamp in milliseconds since 1970 just the way Java gets
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If you have access to the C++ 11 libraries, check out the std::chrono library. You can use it to get the milliseconds since the Unix Epoch like this:
#include <chrono>
// ...
using namespace std::chrono;
milliseconds ms = duration_cast< mi...
Does Qt support virtual pure slots?
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Yes, just like regular c++ pure virtual methods. The code generated by MOC does call the pure virtual slots, but that's ok since the base class can't be instantiated anyway...
Again, just like regular c++ pure virtual methods, the class cannot be ...
Static variables in member functions
...an someone please explain how static variables in member functions work in C++.
4 Answers
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How to overload std::swap()
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In C++2003 it's at best underspecified. Most implementations do use ADL to find swap, but no it's not mandated, so you can't count on it. You can specialize std::swap for a specific concrete type as shown by the OP; just don't...
Reason to Pass a Pointer by Reference in C++?
Under which circumstances would you want to use code of this nature in c++?
6 Answers
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The written versions of the logical operators
...y place I've ever seen and , or and not listed as actual operators in C++. When I wrote up a test program in NetBeans, I got the red underlining as if there was a syntax error and figured the website was wrong, but it is NetBeans which is wrong because it compiled and ran as expected.
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What is “stdafx.h” used for in Visual Studio?
...n I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/can't use this header file.
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Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
...tion pow , which greatly slows down the performance. (In contrast, Intel C++ Compiler , executable icc , will eliminate the library call for pow(a,6) .)
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Are global variables bad? [closed]
In C/C++, are global variables as bad as my professor thinks they are?
28 Answers
28
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Why are preprocessor macros evil and what are the alternatives?
...er be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alternative after so many years?
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