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c++ Programming Glossary: probablyHow do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work by writing 8 chars into an area sized for 4 chars you will probably overwrite the admin data stored for an other chunk of memory..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array because it can't predict random data. Thus there will probably be around 50 misprediction. no better than random guessing data..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions status. There doesn't seem to be much demand for the code probably because anyone who wants to can use Boost.Regex a few SO users.. 's regex anyway. Should just be absent. With hindsight probably yes. But there are exported symbols from the libstdc .so library..
What are copy elision and return value optimization? http://stackoverflow.com/questions/12953127/what-are-copy-elision-and-return-value-optimization limitations If you were referenced to this question you're probably looking for the introduction . For a technical overview see..
Do-While and if-else statements in C/C++ macros http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macros a dangling semicolon is erroneous. Of course it could and probably should be argued at this point that it would be better to declare..
Why does an overridden function in the derived class hide other overloads of the base class? http://stackoverflow.com/questions/1628768/why-does-an-overridden-function-in-the-derived-class-hide-other-overloads-of-the this called name hiding and explain how it works which you probably already know or explain how to override it which you never asked.. with the current set of overloads in the given class. You probably know that in C overload resolution works by choosing the best..
What should main() return in C and C++? http://stackoverflow.com/questions/204476/what-should-main-return-in-c-and-c
What are the rules about using an underscore in a C++ identifier? http://stackoverflow.com/questions/228783/what-are-the-rules-about-using-an-underscore-in-a-c-identifier parameters. If you've come from an MFC background you'll probably use m_foo . I've also seen myFoo occasionally. C# or possibly..
How to stop C++ console application from exiting immediately? http://stackoverflow.com/questions/2529617/how-to-stop-c-console-application-from-exiting-immediately a debugger attached John Dibling's suggested solution is probably the cleanest solution to your problem. That said I'll leave..
How do I flush the cin buffer? http://stackoverflow.com/questions/257091/how-do-i-flush-the-cin-buffer to read until ex ' n' to ignore a single line . Also You probably want to do a std cin.clear before this too to reset the stream..
What are rvalues, lvalues, xvalues, glvalues, and prvalues? http://stackoverflow.com/questions/3601602/what-are-rvalues-lvalues-xvalues-glvalues-and-prvalues new features. But to allow better optimization we should probably embrace them. Quoting n3055 An lvalue so called historically..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c have finished and no longer have any references to file probably due to foo and bar being destroyed file will automatically be..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three copy constructor or copy assignment operator yourself you probably need to explicitly declare all three of them. Unfortunately..
What is the proper declaration of main? http://stackoverflow.com/questions/4207134/what-is-the-proper-declaration-of-main that declare main with a return type of void this is probably the most frequently violated rule concerning the main function..
Is there a way to instantiate objects from a string holding their class name? http://stackoverflow.com/questions/582331/is-there-a-way-to-instantiate-objects-from-a-string-holding-their-class-name are better names for those two though. Another thing which probably makes sense to use here is shared_ptr . If you have a set of..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope in your program to call attention to the fact that you are probably doing something dangerous that could be breaking the rules...
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 and add them When writing more complex applications you'll probably need to add other OpenCV libs that I did not mentioned on this..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used I will hold my hand up and say this is what I use but probably has problems. I like Scott Myers handling of the subject in..
Using scanf() in C++ programs is faster than using cin? http://stackoverflow.com/questions/1042110/using-scanf-in-c-programs-is-faster-than-using-cin C ... c c performance io share improve this question Probably scanf is somewhat faster than using streams. Although streams..
Why do we need a pure virtual destructor in C++? http://stackoverflow.com/questions/1219607/why-do-we-need-a-pure-virtual-destructor-in-c c destructor pure virtual share improve this question Probably the real reason that pure virtual destructors are allowed is..
http://stackoverflow.com/questions/1380371/what-are-the-most-widely-used-c-vector-matrix-math-linear-algebra-libraries-a etc. Downsides Mathematical not rendering focused. Probably not as performant as Eigen. LAPACK Benefits Very stable proven..
Sorting a vector of custom objects http://stackoverflow.com/questions/1380463/sorting-a-vector-of-custom-objects a vector containing custom i.e. user defined objects. Probably standard STL algorithm sort along with a predicate a function..
OpenCV on Mac is not opening USB web camera http://stackoverflow.com/questions/14187866/opencv-on-mac-is-not-opening-usb-web-camera question Try to run your code without this line break . Probably you will find more than just one camera and one of them will.. for iOS OS X Lion will have the same API from highgui_c.h Probably CV_CAP_AVFOUNDATION 1200 is what you are looking for try to..
Why doesn't C++ have a garbage collector? http://stackoverflow.com/questions/147130/why-doesnt-c-have-a-garbage-collector could have been added in but it just didn't make the cut. Probably due to not just implementation complications but also due to..
How to parse space-separated floats in C++ quickly? http://stackoverflow.com/questions/17465061/how-to-parse-space-separated-floats-in-c-quickly might be faster than the various istream implementations. Probably faster than any of these is to use strtod . No need to tokenize..
http://stackoverflow.com/questions/199418/using-c-library-in-c-code in C code Enums varying in size between C and C compilers. Probably not an issue if you're using GNU tool chain but still be careful...
Why is address zero used for null pointer? http://stackoverflow.com/questions/2759845/why-is-address-zero-used-for-null-pointer any number is always representable by a datatype it's 0. Probably 1 is too I think of the one bit integer which would be 0 or..
How to get memory usage under Windows in C++ http://stackoverflow.com/questions/282194/how-to-get-memory-usage-under-windows-in-c in order to get information about the calling process. Probably the WorkingSetSize member of PROCESS_MEMORY_COUNTERS is the..
What are rvalues, lvalues, xvalues, glvalues, and prvalues? http://stackoverflow.com/questions/3601602/what-are-rvalues-lvalues-xvalues-glvalues-and-prvalues in the context of moving things get messy. Are they needed Probably not if we wish to forfeit the new features. But to allow better..
http://stackoverflow.com/questions/408670/stack-static-and-heap-in-c that as a feature of C but I'm probably in the minority. Probably the hardest thing for people to learn about programming in C..
How to get a list of video capture devices (web cameras) on linux ( ubuntu )? (C/C++) http://stackoverflow.com/questions/4290834/how-to-get-a-list-of-video-capture-devices-web-cameras-on-linux-ubuntu-c question This is a code snippet I had laying around. Probably from a book. I guess you could just iterate over all dev videoN..
http://stackoverflow.com/questions/4705593/int-vs-const-int that makes impossible to use it to change the object. Probably readonly would have been a better name as const has IMO the..
Why unnamed namespace is a“ superior” alternative to static? [duplicate] http://stackoverflow.com/questions/4977252/why-unnamed-namespace-is-a-superior-alternative-to-static arguments while with anonymous namespaces it's fine. More Probably but I can't think of anything else right now. share improve..
What C++ Smart Pointer Implementations are available? http://stackoverflow.com/questions/5026197/what-c-smart-pointer-implementations-are-available when using multiple smart pointers. Boost boost shared_ptr Probably the easiest to use in the most varying scenarios STL PIMPL RAII..
“using namespace” in c++ headers http://stackoverflow.com/questions/5849457/using-namespace-in-c-headers in headers rather than trying anything more complicated. Probably static code checkers flag this too. The header should include..
C/C++: Array size at run time w/o dynamic allocation is allowed? http://stackoverflow.com/questions/737240/c-c-array-size-at-run-time-w-o-dynamic-allocation-is-allowed C99 standard supports variable sized arrays on the stack. Probably your compiler has chosen to support this construct too. Note..
initializer_list and move semantics http://stackoverflow.com/questions/8193102/initializer-list-and-move-semantics lvalue references and you will still see copy semantics. Probably the reason for this is so the compiler can elect to make the..
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