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What does the unary plus operator do?
...of "comment" denoting that an integer is positive. Consider the following C++ program:
void foo(unsigned short x)
{
std::cout << "x is an unsigned short" << std::endl;
}
void foo(int x)
{
std::cout << "x is an int" << std::endl;
}
int main()
{
unsigned short x = 5;
fo...
Memory management in Qt?
...
If your MyClass is not a child of QObject, you’ll have to use the plain C++ way of doing things.
Also, note that the parent–child hierarchy of QObjects is generally independent of the hierarchy of the C++ class hierarchy/inheritance tree. That means, that an assigned child does not need to be ...
Return type of '?:' (ternary conditional operator)
...on't have return types, they have a type and - as it's known in the latest C++ standard - a value category.
A conditional expression can be an lvalue or an rvalue. This is its value category. (This is somewhat of a simplification, in C++11 we have lvalues, xvalues and prvalues.)
In very broad and si...
How to implement classic sorting algorithms in modern C++?
...ithm (and its cousins std::partial_sort and std::nth_element ) from the C++ Standard Library is in most implementations a complicated and hybrid amalgamation of more elementary sorting algorithms , such as selection sort, insertion sort, quick sort, merge sort, or heap sort.
...
What is the advantage of using forwarding references in range-based for loops?
...constantly experimenting and pushing for better ways of doing things, that C++ continues to evolve. Thank you. :-)
– Howard Hinnant
Oct 29 '12 at 23:13
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Why is list initialization (using curly braces) better than the alternatives?
...
Basically copying and pasting from Bjarne Stroustrup's "The C++ Programming Language 4th Edition":
List initialization does not allow narrowing (§iso.8.5.4). That is:
An integer cannot be converted to another integer that cannot hold its value. For example, char
to int is allowed,...
clearing a char array c
... achieve this.
On the other hand, if you are choosing to view this as a C/C++ null terminated string, setting the first byte to 0 will effectively clear the string.
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Structs in Javascript
...meters to functions. I'd also argue that a JavaScript class is more like a C++ struct than a C++ class, considering the added effort needed to simulate real object oriented features.
I've found that trying to make JavaScript more like another language gets complicated fast, but I fully support u...
Link to all Visual Studio $ variables
...mething akin to a printenv command) list of defined variables for a Visual C++ project on my machine. Probably not all macros are defined for others (e.g. OCTAVE_EXECUTABLE), but I wanted to err on the side of inclusiveness here.
For example, this is the first time that I see $(Language) (expanding...
Is there a __CLASS__ macro in C++?
Is there a __CLASS__ macro in C++ which gives the class name similar to __FUNCTION__ macro which gives the function name
...