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c++ Programming Glossary: severalAppend an int to a std::string http://stackoverflow.com/questions/10516196/append-an-int-to-a-stdstring argument to be a NULL terminated string char . There are several approaches for producing a string containg an int std ostringstream..
How do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work hard to debug In the one case I was involved it took us several days to find the reason of the dump since it was in a total..
What is an undefined reference/unresolved external symbol error and how do I fix it? http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix this question Compiling a C program takes place in several steps as specified by 2.2 credits to Keith Thompson for the..
C++ Cross-Platform High-Resolution Timer http://stackoverflow.com/questions/1487695/c-cross-platform-high-resolution-timer around OS specific APIs. Its performance library has several classes that would do what you need. To make it cross platform..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code feature complex memory hierarchies registers typically several levels of cache within the CPU chip L1 L2 L3 instruction caches..
How to implement big int in C++ http://stackoverflow.com/questions/269268/how-to-implement-big-int-in-c numbers bigger then a long int. I know that there are several open source implementations out there already but I'd like to..
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 a simple way to find performance problems. Just halt it several times and each time look at the call stack. If there is some..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three a pointer not the character array it points to This has several unpleasant effects Changes via a can be observed via b . Once..
C++ performance challenge: integer to std::string conversion http://stackoverflow.com/questions/4351371/c-performance-challenge-integer-to-stdstring-conversion integer to std string code linked below There are already several questions that explain how to convert an integer into a std.. better algorithms I'd also like to get some benchmarks on several different platforms and compilers let's use MB s throughput..
What's this STL vs. “C++ Standard Library” fight all about? [closed] http://stackoverflow.com/questions/5205491/whats-this-stl-vs-c-standard-library-fight-all-about the STL and it is these parts that many people including several authors and the notoriously error ridden cplusplus.com still..
http://stackoverflow.com/questions/5854581/polymorphism-in-c base class virtual dispatch 1 SFINAE effectively allows several sets of expectations. For example you might encode that when.. supporting polymorphism As promised for completeness several peripheral topics are covered compiler provided overloads conversions..
How to determine CPU and memory consumption from inside a process? http://stackoverflow.com/questions/63166/how-to-determine-cpu-and-memory-consumption-from-inside-a-process WIN32 API GNU docs as well as on the Internet took me several days because there's so much incomplete incorrect outdated information..
http://stackoverflow.com/questions/6403055/object-destruction-in-c counting smart pointers A dynamic object managed by several std shared_ptr Foo objects is destroyed during the destruction..
Subclass/inherit standard containers? http://stackoverflow.com/questions/6806173/subclass-inherit-standard-containers Second it is really bad design. And there are actually several reasons it is bad design. First you should always extend the..
Where do I find the current C or C++ standard documents? http://stackoverflow.com/questions/81656/where-do-i-find-the-current-c-or-c-standard-documents contains the actual text of the standard. As mentioned in several answers here the draft versions of these standards are freely..
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection http://stackoverflow.com/questions/8667818/opencv-c-obj-c-detecting-a-sheet-of-paper-square-detection 0 c 3 c int ch c 0 mixChannels blurred 1 gray0 1 ch 1 try several threshold levels const int threshold_level 2 for int l 0 l threshold_level..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python Read 10000000 lines in 3 seconds. LPS 3333333 Yes I ran it several times. So I guess I will now use scanf instead of getline. But.. on a file with 20M lines of text. Yes I ran it several times to eliminate disk caching confound. usr bin time cat test_lines_double..
http://stackoverflow.com/questions/988158/take-the-address-of-a-one-past-the-end-array-element-via-subscript-legal-by-the legal by the C Standard or not I have seen it asserted several times now that the following code is not allowed by the C Standard..
Seeking and reading large files in a Linux C++ application http://stackoverflow.com/questions/1035657/seeking-and-reading-large-files-in-a-linux-c-application forces all file access calls to use the 64 bit variants. Several types change also e.g. off_t becomes off64_t. It's therefore..
Why is C++ relatively “harder” to use/bad choice for a beginner? [closed] http://stackoverflow.com/questions/1085134/why-is-c-relatively-harder-to-use-bad-choice-for-a-beginner exception of module support where it is a best practice . Several responses say that C is too large referring to either built..
http://stackoverflow.com/questions/15059162/c11-regex-matching exception with the code std regex_constants error_escape . Several regex testers online have no problem with the same expression..
How well is unicode supported in C++11? http://stackoverflow.com/questions/17103925/how-well-is-unicode-supported-in-c11 char_t mbstate_t no op with codecvt char char mbstate_t . Several of these are useful but there is a lot of awkward stuff here...
Do I need to protect read access to an STL container in a multithreading environment? http://stackoverflow.com/questions/187583/do-i-need-to-protect-read-access-to-an-stl-container-in-a-multithreading-environ thread which reads and removes elements while available. Several reader threads which access the SIZE of the container by using..
http://stackoverflow.com/questions/2099830/unsigned-keyword-in-c share improve this question From the link above Several of these types can be modified using the keywords signed unsigned..
http://stackoverflow.com/questions/2753060/who-architected-designed-cs-iostreams-and-would-it-still-be-considered-wel c design iostream share improve this question Several ill conceived ideas found their way into the standard auto_ptr..
Why does C++ compilation take so long? http://stackoverflow.com/questions/318398/why-does-c-compilation-take-so-long performance compilation share improve this question Several reasons Header files Every single compilation unit requires..
Why does C++ require a cast for malloc() but C doesn't? http://stackoverflow.com/questions/3477741/why-does-c-require-a-cast-for-malloc-but-c-doesnt Boda Cydo. c c malloc share improve this question Several points C allows void pointers to be implicitly converted to..
A very simple thread pool using pthreads in C++ http://stackoverflow.com/questions/3561095/a-very-simple-thread-pool-using-pthreads-in-c pthreads posix threadpool share improve this question Several of your errors come from libgcc_s.so . Some of them appear to..
How do I start a CUDA app in Visual Studio 2010? http://stackoverflow.com/questions/3778799/how-do-i-start-a-cuda-app-in-visual-studio-2010 stem from the homegrown custom build tool specifications. Several websites talk about adding a .rules file to the build but I've..
Standalone C or C++ websocket server library [closed] http://stackoverflow.com/questions/3916217/standalone-c-or-c-websocket-server-library c c websocket share improve this question Several months after your question... I wrote a C library libwebsockets..
“dereferencing type-punned pointer will break strict-aliasing rules” warning http://stackoverflow.com/questions/4163126/dereferencing-type-punned-pointer-will-break-strict-aliasing-rules-warning happen in production code and it is not pleasant to debug. Several. You could use a union to represent the memory you need to reinterpret...
What is the best way to create a sparse array in C++? http://stackoverflow.com/questions/4306/what-is-the-best-way-to-create-a-sparse-array-in-c share improve this question For C a map works well. Several million objects won't be a problem. 10 million items took about..
What's the rationale for null terminated strings? http://stackoverflow.com/questions/4418708/whats-the-rationale-for-null-terminated-strings while length prefixed strings can contain embedded nulls. Several of these things have come to light more recently than C so it..
Why are bitwise shifts (<< and >>) used for cout and cin? http://stackoverflow.com/questions/4854248/why-are-bitwise-shifts-and-used-for-cout-and-cin the I O redirection operators in the UNIX shell etc. ... Several operators were considered for input and output opeations The..
Designing a thread-safe copyable class http://stackoverflow.com/questions/5070161/designing-a-thread-safe-copyable-class each instance when created. Thanks for all the responses. Several people have mentioned writing my own copy constructor and assignment..
C++ vim IDE. Things you'd need from it http://stackoverflow.com/questions/623605/c-vim-ide-things-youd-need-from-it that this is Vim where almost all almost is possible. Several questions How often do you manage different workspaces with..
http://stackoverflow.com/questions/867462/c-implicit-conversions implicit conversions Several comments on a recent answer of mine http stackoverflow.com questions..
Why are strings immutable in many programming languages? [duplicate] http://stackoverflow.com/questions/9544182/why-are-strings-immutable-in-many-programming-languages be mutable in Java and .NET Why .NET String is immutable Several languages have chosen for this such as C# Java C and Python...
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