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#include in .h or .c / .cpp?

... True, but doesn't the #ifndef _CALLBACK_H_, on the top of it, prevent the compiler in processing it more than once? – hytromo Feb 8 '14 at 12:25 ...
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In a storyboard, how do I make a custom cell for use with multiple controllers?

...lls out of a storyboard, here's what happens: Each prototype cell is actually its own embedded mini-nib. So when the table view controller is loading up, it runs through each of the prototype cell's nibs and calls -[UITableView registerNib:forCellReuseIdentifier:]. The table view asks the controll...
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How to use QueryPerformanceCounter?

... #include <windows.h> double PCFreq = 0.0; __int64 CounterStart = 0; void StartCounter() { LARGE_INTEGER li; if(!QueryPerformanceFrequency(&li)) cout << "QueryPerformanceFrequency failed!\n"; PCFreq = double(li.QuadPart)/1000.0; QueryP...
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printf() formatting for hex

... but how about the hex: 0x43A66C31C68491C0 I have tried the following: __int64 int64 = 0x43A66C31C68491C0; printf_s("%#15X %d",int64,int64); But the output is 0XC68491C0, not 0x43A66C31C68491C0 – 123iamking May 7 '16 at 4:16 ...
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How to create a self-signed certificate for a domain name for development?

...poses. My web application solution contains a web API etc, that I need to call from external systems, hence I am not using localhost. ...
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Class does not implement its superclass's required members

... I updated to Xcode 6 beta 5 today and noticed I received errors in nearly all of my subclasses of Apple's classes. 4 Answe...
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Best Practice: Access form elements by HTML id or name attribute?

...submits it via AJAX (and you don't care about doing a regular submit as a fallback in case AJAX fails somehow), ...then you've made a mistake. – Doin Aug 18 '16 at 18:32 1 ...
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How to implement classic sorting algorithms in modern C++?

... transparent comparators of the form std::less<> that act polymorphically on their arguments. This avoids having to provide an iterator's type. This can be used in combination with C++11's default function template arguments to create a single overload for sorting algorithms that take < as ...
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The new keyword “auto”; When should it be used to declare a variable type? [duplicate]

... v.end(); ++it) //v is some [std] container { //.. } Or, more generally, //good : auto increases readability here for(auto it = std::begin(v); it != std::end(v); ++it)//v could be array as well { //.. } But when the type is not very well-known and infrequently used , then I think ...
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What are the recommendations for html tag?

I've never seen <base> HTML tag actually used anywhere before. Are there pitfalls to its use that means I should avoid it? ...