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When is a C++ destructor called?
Basic Question: when does a program call a class' destructor method in C++? I have been told that it is called whenever an object goes out of scope or is subjected to a delete
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C++ Best way to get integer division and remainder
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@Cookie : C++03 has no concept of long long, but it's highly likely that your compiler has a long long overload of std::div as an extension.
– ildjarn
Aug 15 '11 at 20:40
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C++ equivalent of Java's toString?
... stream, i.e. cout , for an object of a custom class. Is that possible in C++? In Java you could override the toString() method for similar purpose.
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C++ template constructor
...finitely not in Johannes' words. If they sound humorless then just because C++ is humorless.
– Andreas Spindler
Sep 8 '16 at 10:12
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Is C++14 adding new keywords to C++?
The C++ Standards Committee tends to shy away from adding new keywords to the language, yet with C++11 that was not the case. Some examples:
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C++ valarray vs. vector
...rrays (value arrays) are intended to bring some of the speed of Fortran to C++. You wouldn't make a valarray of pointers so the compiler can make assumptions about the code and optimise it better. (The main reason that Fortran is so fast is that there is no pointer type so there can be no pointer al...
When do I really need to use atomic instead of bool? [duplicate]
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No type in C++ is "atomic by nature" unless it is an std::atomic*-something. That's because the standard says so.
In practice, the actual hardware instructions that are emitted to manipulate an std::atomic<bool> may (or may not) ...
Using arrays or std::vectors in C++, what's the performance gap?
In our C++ course they suggest not to use C++ arrays on new projects anymore. As far as I know Stroustroup himself suggests not to use arrays. But are there significant performance differences?
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C++ Const Usage Explanation
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An easy way to remember the const in C++ is when you see some code in form like:
XXX const;
const YYY;
XXX, YYY will be a constant component,
XXX const form:
function ( def var ) const; ------#1
* const; ------#2
const YYY form:
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C++ template typedef
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C++11 added alias declarations, which are generalization of typedef, allowing templates:
template <size_t N>
using Vector = Matrix<N, 1>;
The type Vector<3> is equivalent to Matrix<3, 1>.
In C++0...