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c++ Programming Glossary: falsehttp://stackoverflow.com/questions/11269766/no-matches-with-c11-regex pattern test regex_constants grep smatch result bool ret false ret regex_search line result pattern cout boolalpha ret endl.. boolalpha ret endl cout result.size endl return 0 output false 0 c regex c 11 share improve this question Because regex..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions an implementation of regex_search that only does return false was a good idea See what I wrote above. It wasn't such a bad..
http://stackoverflow.com/questions/1282295/what-exactly-is-nullptr an instance of a type This isn't surprising. Both true and false are keywords and as literals they have a type bool . nullptr..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code modern architectures with multiprocessor caches is called false sharing . This occurs when each individual processor is attempting..
Printing lists with commas C++ http://stackoverflow.com/questions/3496982/printing-lists-with-commas-c if first_elem delimiter 0 os delimiter os item first_elem false return this infix_ostream_iterator T charT traits operator return..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special it means it is initialized with 0 for that type false for bool 0.0 for double etc. . When an object of class type.. the braces can be empty too. All elements initialized with false int Array4 1000 no initializer. This is different from an empty..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers delim NULL _stream stream _delim delim _insertDelim false pretty_ostream_iterator T TChar TCharTraits operator const.. types template typename T struct is_container public std false_type Mark vector as a container template typename T typename..
Why is iostream::eof inside a loop condition considered wrong? http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong the returned stream from operator would be converted to false and the loop wouldn't even be entered do stuff with correctly..
Developing Internet Explorer Extensions? http://stackoverflow.com/questions/5643819/developing-internet-explorer-extensions true if registryKey null registryKey.DeleteSubKey guid false Command RegistryKey registryKey Registry.LocalMachine.OpenSubKey.. true if registryKey null registryKey.DeleteSubKey guid false #endregion Interop.cs using System using System.Runtime.InteropServices..
Checking if a double (or float) is nan in C++ http://stackoverflow.com/questions/570669/checking-if-a-double-or-float-is-nan-in-c odd property that comparisons involving them are always false. That is for a float f f f will be true only if f is NaN. Note..
http://stackoverflow.com/questions/7011184/floating-point-comparison exactly so the test works as expected 0.5 0.5 is false. So either change float to double or .7 and .5 to .7f and .5f..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops is very likely possibility that this alignment causes false aliasing in the load store units or the cache. I Googled around.. this is due to the alignment which most likely causes false aliasing stalls in the processor load store units. However in.. in the processor load store units. However in order for false aliasing to occur there must be a large enough stride between..
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 tl dr version include the statement cin.sync_with_stdio false or just use fgets instead. C code #include iostream #include.. Edit 4 was Final Edit Solution Adding cin.sync_with_stdio false Immediately above my original while loop above results in code.. you should see much better performance cin.sync_with_stdio false Normally when an input stream is buffered instead of reading..
http://stackoverflow.com/questions/1044654/bitfield-manipulation-in-c and portable typedef unsigned int boolean_t #define FALSE 0 #define TRUE FALSE typedef union struct boolean_t user 1.. unsigned int boolean_t #define FALSE 0 #define TRUE FALSE typedef union struct boolean_t user 1 boolean_t zero 1 boolean_t.. boolean_t is_compat flags.compat if is_compat flags.force FALSE if flags.force ... ... But this makes me cringe . The interesting..
Convert const char* to wstring http://stackoverflow.com/questions/10737644/convert-const-char-to-wstring file data else return mdmVariantNewBoolean FALSE But native.AppendHexDataToFile needs two wstring . I'm not..
Why simple console app runs but dialog based does not run in WIN CE 6.0? http://stackoverflow.com/questions/10959134/why-simple-console-app-runs-but-dialog-based-does-not-run-in-win-ce-6-0 with Cancel Since the dialog has been closed return FALSE so that we exit the application rather than start the application's.. rather than start the application's message pump. return FALSE Why it does not work and how can I resolve this problem Thanks..
http://stackoverflow.com/questions/1604968/what-does-this-c-code-mean of the bit field shall compare equal. Example enum BOOL FALSE 0 TRUE 1 struct A BOOL b 1 A a void f a.b TRUE if a.b TRUE..
ReleaseSemaphore does not release the semaphore http://stackoverflow.com/questions/2375132/releasesemaphore-does-not-release-the-semaphore i x sqrt float i x while ReleaseSemaphore semaphore 1 NULL FALSE printf ReleaseSemaphore error d GetLastError SuspendThread ids.. i x sqrt float i x while ReleaseSemaphore semaphore 1 NULL FALSE the main thread waits for all worker threads and resets the..
Disable sleep mode in Windows Mobile 6 http://stackoverflow.com/questions/246407/disable-sleep-mode-in-windows-mobile-6 running process if PowerPolicyNotify PPN_UNATTENDEDMODE FALSE handle error During unattended mode use you still need to call..
Is 'volatile' needed in this multi-threaded C++ code? http://stackoverflow.com/questions/3612505/is-volatile-needed-in-this-multi-threaded-c-code true break return TRUE return FALSE ... CODE EXECUTED BY THE WORKER THREAD class CsvFileHandler..
http://stackoverflow.com/questions/379172/to-use-goto-or-not return statements. Like below BOOL foo BOOL bRetVal FALSE int p NULL p new int if p NULL cout OOM n goto Exit Lot of code.....
How to get Process Name in C++ http://stackoverflow.com/questions/4570174/how-to-get-process-name-in-c OpenProcess PROCESS_QUERY_INFORMATION PROCESS_VM_READ FALSE 8036 This is the PID you can find one from windows task manager..
http://stackoverflow.com/questions/7457635/calling-r-function-from-c if errorOccurred handle error UNPROTECT 1 'options FALSE ' ... PROTECT e lang2 install options ScalarLogical 0 ... modified.. ScalarLogical 0 ... modified to 'options example.ask FALSE ' this is obscure SET_TAG CDR e install example.ask R_tryEval.. chunk of code is similar evaluating options example.ask FALSE but the construction of the call is more complicated. The S..
How can I get a process handle by its name in C++? http://stackoverflow.com/questions/865152/how-can-i-get-a-process-handle-by-its-name-in-c 0 HANDLE hProcess OpenProcess PROCESS_ALL_ACCESS FALSE entry.th32ProcessID Do stuff.. CloseHandle hProcess CloseHandle.. 0 HANDLE hProcess OpenProcess PROCESS_ALL_ACCESS FALSE entry.th32ProcessID Do stuff.. CloseHandle hProcess CloseHandle..
False Sharing and Atomic Variables http://stackoverflow.com/questions/10143676/false-sharing-and-atomic-variables Sharing and Atomic Variables When different variables are inside.. are inside the same cache line you can experience False Sharing which means that even if two different threads running..
Combing an External Event Loop with Qt's http://stackoverflow.com/questions/1051333/combing-an-external-event-loop-with-qts event loop that the MainWindow has been exited APP_RUNNING False class SampleMainWindow QtGui.QMainWindow def __init__ self parent.. event.accept global APP_RUNNING APP_RUNNING False else event.ignore # main program app QtGui.QApplication sys.argv..
http://stackoverflow.com/questions/10939158/openmp-performance profiling but the performance curve seems indicative of False Sharing ... threads use different objects but those objects..
How to create a DLL with SWIG from Visual Studio 2010 http://stackoverflow.com/questions/11693047/how-to-create-a-dll-with-swig-from-visual-studio-2010 Generated Files click Properties and set SCC Files to False if you use source control this prevents VS2010 trying to check..
How to calculate boolean expression in Spirit http://stackoverflow.com/questions/12598029/how-to-calculate-boolean-expression-in-spirit T v t v true v True return true else if v F v f v false v False return false return boost lexical_cast bool v bool operator.. T v t v true v True return true else if v F v f v false v False return false return boost lexical_cast bool v bool operator..
boost::python Export Custom Exception http://stackoverflow.com/questions/2261858/boostpython-export-custom-exception my_cpp_extension try my_cpp_extension.my_cpp_function False print 'This line should be reached as no exception should be..
What's the best tool to graphically display memory layout from a .map file? http://stackoverflow.com/questions/48426/whats-the-best-tool-to-graphically-display-memory-layout-from-a-map-file 2 m.group 3 m.group 5 else if len sections 0 in_sections False # # Gererate the HTML File # colors '9C9F84' 'A97D5D' 'F7DCB4'..
Porting optimized Sieve of Eratosthenes from Python to C++ http://stackoverflow.com/questions/5293238/porting-optimized-sieve-of-eratosthenes-from-python-to-c 1 int n 0.5 3 1 if sieve i k 3 i 1 1 sieve k k 3 2 k False n 6 k k 6 1 k 1 sieve k k 2 i 1 4 3 2 k False n 6 k k 2 i 1.. k k 3 2 k False n 6 k k 6 1 k 1 sieve k k 2 i 1 4 3 2 k False n 6 k k 2 i 1 4 6 1 k 1 return 2 3 3 i 1 1 for i in xrange 1.. for sieve for k in candidates for l k l 6 sieve k l False for l succ k l 6 sieve k l False Because of the limitations..
Developing Internet Explorer Extensions? http://stackoverflow.com/questions/5643819/developing-internet-explorer-extensions processorArchitecture MSIL SpecificVersion False SpecificVersion EmbedInteropTypes True EmbedInteropTypes HintPath..
OpenCV - Object matching using SURF descriptors and BruteForceMatcher http://stackoverflow.com/questions/7296915/opencv-object-matching-using-surf-descriptors-and-bruteforcematcher How can I distinguish between the two images True matching False matching My code Mat image1 outImg1 image2 outImg2 vector of..
I don't want my Excel Add-In to return an array (instead I need a UDF to change other cells) http://stackoverflow.com/questions/8520732/i-dont-want-my-excel-add-in-to-return-an-array-instead-i-need-a-udf-to-change Application.OnTime mApplicationTimerTime AfterUDFRoutine2 False On Error GoTo 0 End If ' Schedule timer mApplicationTimerTime.. tasks not allowed in a UDF... Application.ScreenUpdating False Application.Calculation xlCalculationManual Do While mCalculatedCells.Count..
http://stackoverflow.com/questions/9168785/hand-detection-using-opencv fingertips using the Generalised Hough Transform. False positives can become a worry however and efficiency is a worry..
http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on post process cv.CV_WINDOW_AUTOSIZE key_pressed False while key_pressed STOP_KEY # grab image orig cv.LoadImage 'circles3.jpg'..
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