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Why do we need a pure virtual destructor in C++?
...unctions can have implementations).
struct foo {
virtual void bar() = 0;
};
void foo::bar() { /* default implementation */ }
class foof : public foo {
void bar() { foo::bar(); } // have to explicitly call default implementation.
};
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Convert string with comma to integer
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Michael KohlMichael Kohl
62k1010 gold badges125125 silver badges149149 bronze badges
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What exactly is a reentrant function?
...t, everything seems ok… But wait:
int main()
{
foo(bar);
return 0;
}
If the lock on mutex is not recursive, then here's what will happen, in the main thread:
main will call foo.
foo will acquire the lock.
foo will call bar, which will call foo.
the 2nd foo will try to acquire the lock...
How to find the statistical mode?
...
On my dinky little machine, that can generate & find the mode of a 10M-integer vector in about half a second.
If your data set might have multiple modes, the above solution takes the same approach as which.max, and returns the first-appearing value of the set of modes. To return all modes, ...
C# DateTime.Now precision
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answered Jan 27 '10 at 0:36
Eric LippertEric Lippert
599k164164 gold badges11551155 silver badges20142014 bronze badges
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Find all storage devices attached to a Linux machine [closed]
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Giacomo1968
23.3k1010 gold badges5858 silver badges8787 bronze badges
answered Oct 14 '08 at 13:11
Steve BakerSteve Bak...
How do you serialize a model instance in Django?
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answered Jul 20 '10 at 10:31
xaralisxaralis
3,97611 gold badge1919 silver badges2020 bronze badges
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What does auto&& tell us?
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240
By using auto&& var = <initializer> you are saying: I will accept any initializer ...
Malloc vs new — different padding
...'s C++ code for our project that uses MPI for high-performance computing (10^5 - 10^6 cores). The code is intended to allow for communications between (potentially) different machines on different architectures. He's written a comment that says something along the lines of:
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No EditorOptionDefinition Export Found Error
In Visual Studio 2013 I started getting the following error when trying to open C# files:
8 Answers
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