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When should you use 'friend' in C++?
...ough the C++ FAQ and was curious about the friend declaration. I personally have never used it, however I am interested in exploring the language.
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In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
... The simplest example is the DEBUG=1 macro that is defined by default for all Xcode projects in the default scheme for the Run build. One could query #ifdef DEBUG ... and make decisions in the code accordingly, even compiling out non-necessary code.
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Execute code when Django starts ONCE only?
... entirely a separate problem. The idea of special one-time startup before all management commands is hard to understand. You'll have to provide something specific. Perhaps in another question.
– S.Lott
Feb 13 '12 at 12:49
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Equivalent C++ to Python generator pattern
...to signal termination
In your trivial example, it's easy enough. Conceptually:
struct State { unsigned i, j; };
State make();
void next(State&);
bool isDone(State const&);
Of course, we wrap this as a proper class:
class PairSequence:
// (implicit aliases)
public std::iterat...
Returning binary file from controller in ASP.NET Web API
...rn result;
}
A few things to note about the stream used:
You must not call stream.Dispose(), since Web API still needs to be able to access it when it processes the controller method's result to send data back to the client. Therefore, do not use a using (var stream = …) block. Web API will di...
Can I find out the return value before returning while debugging in Eclipse?
...why I always stick with the following pattern for methods:
MyReturnedType foo() {
MyReturnedType result = null;
// do your stuff, modify the result or not
return result;
}
My rules:
Only one return statement, only at the end of the method (finally allowed after it)
Always hav...
Blocks on Swift (animateWithDuration:animations:completion:)
... dat completion block syntax :(
– Chris Allinson
Sep 25 '16 at 0:19
add a comment
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libpng warning: iCCP: known incorrect sRGB profile
...geMagick's
convert in.png out.png
To remove the invalid iCCP chunk from all of the PNG files in a folder (directory), you can use mogrify from ImageMagick:
mogrify *.png
This requires that your ImageMagick was built with libpng16. You can easily check it by running:
convert -list format | gre...
Can a C++ enum class have methods?
...nsider a class, too. Yet they can have member functions. And classes are really not mandatory for member functions. Using a designator like value or this, something like enum Size { Huge, Mega, Apocalypse; bool operator<(X rhs) const { return *this < rhs; } (here also allowing ;), it can make ...
Does JavaScript have a method like “range()” to generate a range within the supplied bounds?
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@rodfersou FYI: your example is wrong. stop is not actually the stop / end position but count / distance. (no offense, just to make people aware of the typo)
– F Lekschas
Jul 26 '18 at 2:45
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