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c++ Programming Glossary: fromWhat 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 rather than local variables or parameters. If you've come from an MFC background you'll probably use m_foo . I've also seen.. C99 is a normative reference 1.2 1 C 03 these also apply from the 1999 C Standard 7.1.3 Reserved identifiers Each header declares.. for clarification and official chapter and verse. This is from the GNU libtool manual listing reserved names. CesarB provided..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c this question FWIW here's another way to extract tokens from an input string relying only on standard library facilities...
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 random and it will miss the real problem . This comes from having a prior concept of what the real problem is. A key property.. says that for example the probability that f 0.5 is 92 up from the prior assumption of 60 . Suppose the prior assumptions are.. 0.01375 1 P o 2 2 0.01375 Now it says P f 0.5 is 26 up from the prior assumption of 0.6 . So Bayes allows us to update our..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three I need to declare them myself How can I prevent my objects from being copied c copy constructor assignment operator c faq rule.. ourselves these are implicitly defined for us. Quote from the standard The ... copy constructor and copy assignment operator.. operator const person that Alternatively you can inherit from boost noncopyable or declare them as deleted C 0x person const..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points of behavior. 3 permissible undefined behavior ranges from ignoring the situation completely with unpredictable results.. . In short undefined behaviour means anything can happen from daemons flying out of your nose to your girlfriend getting pregnant...
http://stackoverflow.com/questions/4421706/operator-overloading operand ™s type. However their left operands are streams from the standard library and while most of the stream output and.. os std istream operator std istream is T obj read obj from stream if no valid object of T found in stream is.setstate std.. come in both prefix and postfix flavor. To tell one from the other the postfix variants take an additional dummy int..
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 templates only be implemented in the header file Quote from The C standard library a tutorial and handbook The only portable.. implementation This way implementation is still separated from declaration but is accessible to the compiler. Another solution..
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 this as a Russian doll i.e. Union T1 T2 T3 derives from UnionNode T1 UnionNode T2 UnionNode T3 void and UnionNode T.. T2 UnionNode T3 void and UnionNode T Tail derives from Tail. The specialization UnionNode T void holds a void which.. initalizer list template typename T struct derive_from_Has_type typename SomeBase T type In using declarations it's..
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 room. Nor is there a mysterious force that prevents you from entering a room with a stolen key. The hotel management is not..
http://stackoverflow.com/questions/1008019/c-singleton-design-pattern ~Singleton private Singleton static Singleton instance From this declaration I can deduce that the instance field is initiated..
What is a “translation unit” in C++ http://stackoverflow.com/questions/1106149/what-is-a-translation-unit-in-c knowing the term.... c share improve this question From here According to standard C A translation unit is the basic..
Capturing stdout from a system() command optimally http://stackoverflow.com/questions/125828/capturing-stdout-from-a-system-command-optimally in C C c c system stdout share improve this question From the popen manual #include stdio.h FILE popen const char command..
How come a non-const reference cannot bind to a temporary object? http://stackoverflow.com/questions/1565600/how-come-a-non-const-reference-cannot-bind-to-a-temporary-object const temporary c faq share improve this question From this Visual C blog article about rvalue references ... C doesn't..
http://stackoverflow.com/questions/1610030/why-can-you-return-from-a-non-void-function-without-returning-a-value-without-pr be set with embedded assembler or other tricky methods. From n2960 draft § 6.6.3 2 Flowing off the end of a function is equivalent..
Variable number of arguments in C++? http://stackoverflow.com/questions/1657883/variable-number-of-arguments-in-c variable number of arguments in C you include stdarg.h. From that you'll get the va_list type as well as three functions..
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 You are allowed to add template specializations though. From the 2003 C Standard 17.4.3.2.1 Global names lib.global.names..
C++/CLI Mixed Mode DLL Creation http://stackoverflow.com/questions/2691325/c-cli-mixed-mode-dll-creation C DLL that I would like to have a C CLI wrapper layer for. From what I understood if you simple added a C CLI class to the project..
Generate random numbers uniformly over an entire range http://stackoverflow.com/questions/288739/generate-random-numbers-uniformly-over-an-entire-range as for int i 0 i 6 i DWORD random rand max min 1 min From my tests random numbers are generated around one point only... generated 3631594 3609293 3630000 3628441 3636376 3621404 From answers below OK RAND_MAX is 32767. I am on C Windows platform...
What are rvalues, lvalues, xvalues, glvalues, and prvalues? http://stackoverflow.com/questions/3601602/what-are-rvalues-lvalues-xvalues-glvalues-and-prvalues expressions that can be moved and in which direction. From what I guess based on the draft the r l value distinction stays..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points expression may also contain intermediate sequence points . From the above sentence the following expressions invoke Undefined..
When to use volatile with multi threading? http://stackoverflow.com/questions/4557979/when-to-use-volatile-with-multi-threading do apply to certian operations on volatile variables. From the MSDN When optimizing the compiler must maintain ordering..
http://stackoverflow.com/questions/5854581/polymorphism-in-c they all contribute subtle support for polymorphism. From the definition at the top of this answer they address finding..
http://stackoverflow.com/questions/5926103/most-vexing-parsec TimeKeeper time_keeper Timer return time_keeper.get_time From the looks of it it should get compile error due to the line..
When should I use the new keyword in C++? http://stackoverflow.com/questions/655065/when-should-i-use-the-new-keyword-in-c new keyword... MyClass myClass myClass.MyField Hello world From an implementation perspective they don't seem that different..
Create WCF service for unmanaged C++ clients http://stackoverflow.com/questions/686452/create-wcf-service-for-unmanaged-c-clients the Additional Library Directories. Click the OK button. From the File menu select the Add New Project... menu item. Select.. the WCF service we need to build a managed C bridge DLL. From the File menu select the Add New Project... menu item. Select..
Are std::vector elements guaranteed to be contiguous? http://stackoverflow.com/questions/849168/are-stdvector-elements-guaranteed-to-be-contiguous 0x standard will of course contain this as a requirement. From n2798 draft of C 0x 23.2.6 Class template vector vector 1 A..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used How should it be used Edit From another question I provided an answer that has links to a lot..
Google protocol buffers on iOS http://stackoverflow.com/questions/10277576/google-protocol-buffers-on-ios NSData dataWithBytes ps.c_str length ps.size TO READ FROM NSDATA Packet getPacketFromNSData NSData data char raw data..
Calling Objective-C method from C++ method? http://stackoverflow.com/questions/1061005/calling-objective-c-method-from-c-method that will be used to invoke a specific Objective C method FROM C int MyObjectDoSomethingWith void myObjectInstance void parameter..
C++ plugin for Unity “EntryPointNotFoundExeption” http://stackoverflow.com/questions/11619986/c-plugin-for-unity-entrypointnotfoundexeption NULL FAILED hRes _service ExecQuery L WQL L SELECT FROM Win32_DesktopMonitor WBEM_FLAG_FORWARD_ONLY NULL _monitors ..
Fetching rows in a MySQL database table using MySQL C API and C++ http://stackoverflow.com/questions/1194453/fetching-rows-in-a-mysql-database-table-using-mysql-c-api-and-c I done it in PHP data array i 0 query mysql_query SELECT FROM `my_table` while fetch mysql_fetch_array query data i fetch.. user pass database port NULL 0 mysql_query sqlhnd SELECT FROM `my_table` MYSQL_RES confres mysql_store_result sqlhnd int totalrows.. code should be something like mysql_query sqlhnd SELECT FROM `my_table` MYSQL_RES confres mysql_store_result sqlhnd int totalrows..
Cuda version not working while serial working http://stackoverflow.com/questions/13630817/cuda-version-not-working-while-serial-working int i 0 i N 2 i if idx i continue NOTE THIS LINE MISSING FROM YOUR GPU CODE Point2D other_pt a 2 i a 2 i 1 pol.cut curPt other_pt..
sort multidimensional vector of ints? http://stackoverflow.com/questions/14669533/sort-multidimensional-vector-of-ints mysql_perform_query conn SELECT column1 column2 column3 FROM table1 std vector std vector int myVector while row mysql_fetch_row..
Downloading and integrating Qt5 with Visual Studio 2012 http://stackoverflow.com/questions/15826893/downloading-and-integrating-qt5-with-visual-studio-2012 TO OVERCOME THIS ISSUE IS TO COMPLETELY UNINSTALL AVAST FROM YOUR SYSTEM before building Qt. You can reinstall Avast after..
http://stackoverflow.com/questions/15832798/using-ace-with-wt WT UPDATE 3 Final working code below. YOU NEED THE ace.js FROM THE src FOLDER It will not work from the libs you need the pre..
Inheriting and overriding functions of a std::string? http://stackoverflow.com/questions/4205050/inheriting-and-overriding-functions-of-a-stdstring encoding share improve this question DON'T DERIVE FROM STRING std string that is basically the whole basic_string template..
Redirect FROM stderr to another file descriptor http://stackoverflow.com/questions/5095839/redirect-from-stderr-to-another-file-descriptor FROM stderr to another file descriptor My program calls library..
Custom manipulator for C++ iostream http://stackoverflow.com/questions/535444/custom-manipulator-for-c-iostream quote std ostringstream os std string name Joe os SELECT FROM customers WHERE name quote name The manipulator quote will quote.. The manipulator quote will quote name to produce SELECT FROM customers WHERE name 'Joe' How do I go about accomplishing that..
http://stackoverflow.com/questions/58210/c-smtp-example ourselves read_socket Read reply send_socket MAIL FROM send_socket from_id send_socket r n read_socket Sender OK send_socket..
Raw C++ code to display the names of tables in an SQL compact server using OLE DB http://stackoverflow.com/questions/8780656/raw-c-code-to-display-the-names-of-tables-in-an-sql-compact-server-using-ole-d with two code examples ICommandText on SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES IDBSchemaRowset on DBSCHEMA_TABLES.. Server CE 3.0 3.1 database for executing SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES using ICommandText and IRowset #include.. SetCommandText DBGUID_SQL OLESTR SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES DBROWCOUNT cRowsAffected 0 CComPtr..
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