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c++ Programming Glossary: onWhat 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 about using an underscore in a C identifier It's common in C to name member variables with some kind of prefix to denote.. you'll probably use m_foo . I've also seen myFoo occasionally. C# or possibly just .NET seems to recommend using just.. C standard c standards c faq share improve this question The rules which did not change in C 11 Reserved in any scope..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c whitespace. Note that I'm not interested in C string functions or that kind of character manipulation access. Also please.. in C string functions or that kind of character manipulation access. Also please give precedence to elegance over efficiency.. to elegance over efficiency in your answer. The best solution I have right now is #include iostream #include sstream #include..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux can I use to profile C code in Linux I have a C application I'm in the process of optimizing. What tool can I use to pinpoint.. my slow code c unix profiling share improve this question If your goal is to use a profiler use one of the suggested.. this question If your goal is to use a profiler use one of the suggested ones. However if you're in a hurry and you..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three Three What does copying an object mean What are the copy constructor and the copy assignment operator When do I need to declare.. How can I prevent my objects from being copied c copy constructor assignment operator c faq rule of three share improve.. operator c faq rule of three share improve this question Introduction C treats variables of user defined types with..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points Points What are Sequence Points What is the relation between Undefined Behaviour and Sequence Points I often use.. Behaviour and Sequence Points I often use funny and convoluted expressions like a i i to make myself feel better. Why.. Sequence Points I often use funny and convoluted expressions like a i i to make myself feel better. Why should I stop using..
Why can templates only be implemented in the header file? http://stackoverflow.com/questions/495021/why-can-templates-only-be-implemented-in-the-header-file can templates only be implemented in the header file Quote from The C standard.. from The C standard library a tutorial and handbook The only portable way of using templates at the moment is to implement.. is to implement them in header files by using inline functions. Why is this c templates c faq share improve this question..
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 cout p And the code is just running with no runtime exceptions The output was 5 8 How can it be Isn't the memory of a local.. memory of a local variable inaccessible outside its function c memory management local variables dangling share How.. memory of a local variable inaccessible outside its function You rent a hotel room. You put a book in the top drawer of the..
Best open XML parser for C++ [closed] http://stackoverflow.com/questions/170686/best-open-xml-parser-for-c speed of strlen function executed on the same data. On a modern CPU as of 2008 the parser throughput is about 1 billion.. characters per second. See Performance section in the Online Manual. Small memory footprint of the code and created DOM.. vocabulary as well as parsing and serialization code. One of the unique features of CodeSynthesis XSD is its support..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom a hassle. We should strive to never repeat ourselves. One might wonder if this much code is needed to manage one resource.. this choice is critical in C 11 which is discussed later. On a general note a remarkably useful guideline is as follows if.. call and our function will be found through ADL . One function will do. ˇThe reason is simple once you have the resource..
Finding C++ static initialization order problems http://stackoverflow.com/questions/335369/finding-c-static-initialization-order-problems method must be guarded with a critical section. On the bright side gcc has an explicit patch as part of the compiler.. the locking. This will not work in C Creation Problems On creation there are no problems because we guarantee that it..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring to hold a wide character and then things get tricky On Linux a wchar_t is 4 bytes while on Windows it's 2 bytes what.. that neither char nor wchar_t is directly tied to unicode. On Linux Let's take a Linux OS My Ubuntu system is already unicode.. because some combination of chars is forbidden in UTF 8. On Windows On Windows this is a bit different. Win32 had to support..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c std is_same int 8 int value an array is not a pointer One important context in which an array does not decay into a pointer.. to x . The former is a pointer the latter an array. Only when the context triggers array to pointer decay can x and.. the addition T q array decay happens due to the assignment On the first line the compiler detects an assignment from a pointer..
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 class. So do friend s break Encapsulation No they don't On the contrary they enhance Encapsulation friend ship is used..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords or not. It separates them into logically different groups One catches types another catches expressions. Expressions may.. In some cases the keywords are forbidden as detailed below On the name of a dependent base class you are not allowed to write..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability at least if you want your program to run on Windows. On Windows you have to ignore the C and C standards almost everywhere..
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 paths I suggest on this guide as yours might be different. On Visual Studio create a new Win32 Console Application project.. ALT F7 and once the new window shows up do the following On the Configuration box select All Configurations Open Configuration..
Glew problems, unresolved externals http://stackoverflow.com/questions/11059971/glew-problems-unresolved-externals Viewport transformation glMatrixMode GL_PROJECTION Projection transformation glLoadIdentity Initialize the projection.. the active texture glEnable GL_TEXTURE_2D Texture mapping ON printf Txt map ON else glDisable GL_TEXTURE_2D Texture mapping.. glEnable GL_TEXTURE_2D Texture mapping ON printf Txt map ON else glDisable GL_TEXTURE_2D Texture mapping OFF glGetDoublev..
http://stackoverflow.com/questions/12434955/c-wait-and-sleep-problems can still use that if statement. THIS IS FOR A DLL RUNNING ON A XBOX360 Libs currently in use #include stdafx.h #include stdio.h..
How to make generic computations over heterogeneous argument packs of a variadic template function? http://stackoverflow.com/questions/14261183/how-to-make-generic-computations-over-heterogeneous-argument-packs-of-a-variadic way more stuff than is needed to address this issue. QUESTION Is there a relatively simple way possibly through some template.. be extended to carry out more complex tasks. IMPLEMENTATION Now comes the implementation which is a bit tricky in itself.. is #include type_traits #include utility META FUNCTIONS FOR EXTRACTING THE n th TYPE OF A PARAMETER PACK Declare primary..
http://stackoverflow.com/questions/1437158/c-win32-keyboard-events ret 1 by default I swallow the keys if mmode macro mode is ON if WM_KEYDOWN wParam PostMessage mainwnd WM_MCR_ACCUM kbd vkCode.. PostMessage mainwnd WM_MCR_EXEC 0 0 break case VK_LCONTROL mmode false PostMessage mainwnd WM_MCR_HIDE 0 0 PostMessage.. printable keys allow passing switch kbd vkCode case VK_LCONTROL case VK_CAPITAL case VK_LSHIFT case VK_RSHIFT ret CallNextHookEx..
Boost.Log with CMake causing undefined reference error http://stackoverflow.com/questions/17844085/boost-log-with-cmake-causing-undefined-reference-error Hello World CMakeLists.txt CMAKE_MINIMUM_REQUIRED VERSION 2.8 FIND_PACKAGE Boost 1.54 COMPONENTS log REQUIRED FIND_PACKAGE.. VERSION 2.8 FIND_PACKAGE Boost 1.54 COMPONENTS log REQUIRED FIND_PACKAGE Threads INCLUDE_DIRECTORIES Boost_INCLUDE_DIR.. cmake 2.8 Modules FindBoost.cmake 476 _boost_TEST_VERSIONS 1.56.0 1.56 1.55.0 1.55 1.54.0 1.54 usr share cmake 2.8 Modules..
Cmake: force use of non *-mt Boost libraries? http://stackoverflow.com/questions/19017335/cmake-force-use-of-non-mt-boost-libraries OFF and # set Boost_USE_MULTI_THREADED ON the line commented see line 30 of CMakeList.txt . Both with..
Do I need to use locking with integers in c++ threads http://stackoverflow.com/questions/2895614/do-i-need-to-use-locking-with-integers-in-c-threads You are never locking a value you are locking an operation ON a value. C C do not explicitly mention threads or atomic operations..
Compiling static TagLib 1.6.3 libraries for Windows http://stackoverflow.com/questions/3878883/compiling-static-taglib-1-6-3-libraries-for-windows CMake currently... cmake G MinGW Makefiles DENABLE_STATIC ON DHAVE_ZLIB 0 DWITH_MP4 1 DMAKE_TAGLIB_LIB 1 cmake build . This..
Need help in reading JPEG file using libjpeg http://stackoverflow.com/questions/5616216/need-help-in-reading-jpeg-file-using-libjpeg cinfo.output_scanline cinfo.output_height IT ALWAYS crash ON THIS JPEG_READ_SCANLINES FUNCTION CALL BELOW void jpeg_read_scanlines.. IT ALWAYS crash ON THIS JPEG_READ_SCANLINES FUNCTION CALL BELOW void jpeg_read_scanlines cinfo JSAMPARRAY imageData..
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