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c++ Programming Glossary: perProgrammatically find the number of cores on a machine http://stackoverflow.com/questions/150355/programmatically-find-the-number-of-cores-on-a-machine way If no such thing exists what about determining it per platform Windows nix Mac c multicore share improve this question.. and Mac OS X for all OS releases 10.4 i.e. Tiger onwards per comments numCPU sysconf _SC_NPROCESSORS_ONLN FreeBSD MacOS X..
Best open XML parser for C++ [closed] http://stackoverflow.com/questions/170686/best-open-xml-parser-for-c 2008 the parser throughput is about 1 billion characters per second. See Performance section in the Online Manual. Small.. to handle large XML documents that would not fit in memory perform stream oriented processing or use an existing in memory..
Is there a simple script to convert C++ enum to string? http://stackoverflow.com/questions/201593/is-there-a-simple-script-to-convert-c-enum-to-string in my project and generates a header with one function per enum. char enum_to_string MyEnum t And a implementation with..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line to read integers from a text file which has one number per line until it hits EOF . Why does it read the integer on the.. main ifstream iFile input.txt input.txt has integers one per line while iFile.eof int x iFile x cerr x endl return 0 input.txt..
Dynamically allocating an array of objects http://stackoverflow.com/questions/255612/dynamically-allocating-an-array-of-objects 0 A int size myArray new int size ~A Note that as per MikeB's helpful style critique no need to check against 0. delete.. standard containers such as a std vector . But this is a perfect example of the things you need to consider when your object.. C 11 . Constructor Destructor Copy Constructor Assignment Operator Move Constructor C 11 Move Assignment C 11 This is because..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring the label on a Win32 GUI . Memory issues UTF 32 is 4 bytes per characters so there is no much to add if only that a UTF 8 text.. than for UTF 16. All in all UTF 16 will mostly use 2 bytes per characters unless you're dealing with some kind of esoteric..
http://stackoverflow.com/questions/4421706/operator-overloading overloading What are the basic rules and idioms for operator.. overloading What are the basic rules and idioms for operator overloading in C Note The answers were given in a specific.. order in which they make most sense The General Syntax of operator overloading in C The Three Basic Rules of Operator Overloading..
What are access specifiers? Should I inherit with private, protected or public? http://stackoverflow.com/questions/5447498/what-are-access-specifiers-should-i-inherit-with-private-protected-or-public Important points to note Access Specification is per Class not per Object Note that the access specification C work.. points to note Access Specification is per Class not per Object Note that the access specification C work on per Class.. per Object Note that the access specification C work on per Class basis and not per object basis. A good example of this..
http://stackoverflow.com/questions/6438086/iterator-invalidation-rules inherited from underlying container Resizing vector as per insert erase 23.2.4.2 6 deque as per insert erase 23.2.1.2 1.. Resizing vector as per insert erase 23.2.4.2 6 deque as per insert erase 23.2.1.2 1 list as per insert erase 23.2.2.2 1.. 23.2.4.2 6 deque as per insert erase 23.2.1.2 1 list as per insert erase 23.2.2.2 1 Note 1 Unless otherwise specified either..
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 where the lifetime of each byte in the storage that is the period of time when it is validly associated with some program variable.. on a stack data structure because a stack has the property that the first thing pushed on it is going to be the last.. has checked out. So let's think about the stack. In many operating systems you get one stack per thread and the stack is allocated..
Unicode encoding for string literals in C++11 http://stackoverflow.com/questions/6796157/unicode-encoding-for-string-literals-in-c11 u8 creates a UTF 8 encoded string. They will be encoded per the Unicode specification. In 1 can I write lone surrogates.. will have to use a locale to specify the encoding and properly imbue it into the various places. This is easier said than..
C++ plugin for Unity “EntryPointNotFoundExeption” http://stackoverflow.com/questions/11619986/c-plugin-for-unity-entrypointnotfoundexeption return the result but that returns the same error. UPDATE Per suggestion I have changed my C functions to this format void..
Dereference-assignment to a doubly incremented OutputIterator http://stackoverflow.com/questions/11887104/dereference-assignment-to-a-doubly-incremented-outputiterator assignment to a doubly incremented OutputIterator Per the excellent question C OutputIterator post increment requirements..
http://stackoverflow.com/questions/11976084/why-sdl-defines-main-macro undefine main. c sdl main share improve this question Per the SDL Windows FAQ You should be using main instead of WinMain..
Use same udp socket for async receive/send http://stackoverflow.com/questions/12252822/use-same-udp-socket-for-async-receive-send and endpoint for each request process response chain. Per async_receive_from 's documentation the caller retains ownership..
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol depth limit. This limit is implementation specific. Per Paragraph 16.2 6 of the C 11 Standard A #include preprocessing.. once and since this violates the One Definition Rule . Per Paragraph 3.2 3 of the C 11 Standard Every program shall contain.. keyword is to put function f in an unnamed namespace . Per Paragraph 3.5 4 of the C 11 Standard An unnamed namespace or..
Why use variadic arguments now when initializer lists are avaiable? http://stackoverflow.com/questions/15465543/why-use-variadic-arguments-now-when-initializer-lists-are-avaiable question values in an initializer lists are const objects. Per Paragraph 18.9 1 of the C 11 Standard An object of type initializer_list..
CRTP and dynamic polymorphism compile error http://stackoverflow.com/questions/15570333/crtp-and-dynamic-polymorphism-compile-error C does not make C a complete type when instantiating B C . Per Paragraph 9.2 2 of the C 11 Standard A class is considered a..
http://stackoverflow.com/questions/15865627/is-indexing-a-new-map-element-and-having-something-that-reads-it-assigned-to-it operator because std map 's operator returns a size_t . Per Paragraph 5.17 1 of the C 11 Standard on the built in assignment..
Do I have to use atomic<bool> for “exit” bool variable? http://stackoverflow.com/questions/16111663/do-i-have-to-use-atomicbool-for-exit-bool-variable another thread is writing it. This is Undefined Behavior. Per Paragraph 1.10 21 of the C 11 Standard The execution of a program..
How can a C++ base class determine at runtime if a method has been overridden? http://stackoverflow.com/questions/1801949/how-can-a-c-base-class-determine-at-runtime-if-a-method-has-been-overridden method if derived classes may or must call it void A f Per your comment If the method had not been overridden it would..
Detach a pointer from a shared_ptr? [duplicate] http://stackoverflow.com/questions/1833356/detach-a-pointer-from-a-shared-ptr function shared_ptr doesn't have a release function. Per the Boost manual Q. Why doesn't shared_ptr provide a release..
The best cross platform (portable) arbitrary precision math library http://stackoverflow.com/questions/2568446/the-best-cross-platform-portable-arbitrary-precision-math-library The tricky part of bignums is long division. I recommend Per Brinch Hansen's paper Multiple Length Division Revisited A Tour..
fatal error C1014: too many include files : depth = 1024 http://stackoverflow.com/questions/2582521/fatal-error-c1014-too-many-include-files-depth-1024 outs outs.precision 6 outs L FPS fps L n Milliseconds Per Frame mspf mFrameStats outs.str Reset for next average. frameCnt..
Boost::multi_array performance question http://stackoverflow.com/questions/446866/boostmulti-array-performance-question I am doing writes to memory. EDIT This was a debug build. Per Laserallan's suggest I did a release build Boost Elapsed time.. array is implemented though so this might be totally off Perhaps there is some difference in storage order as well so you..
Will std::string always be null-terminated in C++11? http://stackoverflow.com/questions/6077189/will-stdstring-always-be-null-terminated-in-c11 null terminated share improve this question Yes. Per the C 0x FDIS 21.4.7.1 1 std basic_string c_str must return..
C++11 lambda capture semantics http://stackoverflow.com/questions/6181464/c11-lambda-capture-semantics captured. In your example my_huge_vector is not captured. Per C 11 §5.1.2 expr.prim.lambda 11 If a lambda expression has an..
Win32 determining when keyboard is connected/disconnected http://stackoverflow.com/questions/9930958/win32-determining-when-keyboard-is-connected-disconnected the lParam can be sent straigth to GetRawInputDeviceInfo . Per comments The WM_INPUT_DEVICE_CHANGE will only arrive for apps..
C++11 does not deduce type when std::function or lambda functions are involved http://stackoverflow.com/questions/9998402/c11-does-not-deduce-type-when-stdfunction-or-lambda-functions-are-involved expression without directly creating a std function EDIT Per advice of Luc Danton in the comments here is an alternative..
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