¡@
c++ Programming Glossary: osDetecting endianness programmatically in a C++ program http://stackoverflow.com/questions/1001307/detecting-endianness-programmatically-in-a-c-program much better than fixing the endianness at compile time for OS which support multi architecture fat binary on Mac os x for..
System(“pause”); - Why is it wrong? http://stackoverflow.com/questions/1107705/systempause-why-is-it-wrong programming but instead to get around a feature of the IDE OS the console window launched from Visual Studio closes when the..
How do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work really big trouble. The other reason of course is that the OS can only handle memory chunks that are of a specific size and.. a specific size and alignment. To be specific Normally the OS can only handle blocks that the virtual memory manager can handle.. of 512 Bytes eg. 4KB . So returning 40 Bytes to the OS will just not work. So what does free do Free will put the memory..
What is the difference between an int and a long in C++? http://stackoverflow.com/questions/271076/what-is-the-difference-between-an-int-and-a-long-in-c the Intel C compiler on variable platforms. To summarize OS arch size Windows IA 32 4 bytes Windows Intel 64 4 bytes Windows.. 32 4 bytes Linux Intel 64 8 bytes Linux IA 64 8 bytes Mac OS X IA 32 4 bytes Mac OS X Intel 64 8 bytes share improve this..
C++ Timer function to provide time in nano seconds http://stackoverflow.com/questions/275004/c-timer-function-to-provide-time-in-nano-seconds typically adjust for multiple processors bugs in the BIOS or drivers may result in these routines returning different.. a 4588605 34329 states that QPC should work fine on any MS OS after Win XP service pack 2. This article shows that Windows..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new and why will an OS initialise memory to 0xCD 0xDD etc. on malloc free new delete.. 0xCD 0xDD etc. on malloc free new delete I know that the OS will sometimes initialise memory with certain patterns such.. at byte level . the following magic values are done by the OS not the C runtime 0xAB Allocated Block Memory allocated by LocalAlloc..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring is directly tied to unicode. On Linux Let's take a Linux OS My Ubuntu system is already unicode aware. When I work with..
What is the proper declaration of main? http://stackoverflow.com/questions/4207134/what-is-the-proper-declaration-of-main where you have a full standard library and there's an OS running your program . It is also possible to compile a C program.. even be required. If you're writing C for a modern desktop OS though you're compiling for a hosted environment. share improve..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability are different from the file names you passed to the OS. Either you need an external wrapper library or lots of #ifdef..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes share improve this question For Linux and I believe Mac OS X if you're using gcc or any compiler that uses glibc you can..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used initialization Up to your requirements Sometimes the OS or the JVM creates singletons for you e.g. in Java every class..
Detecting endianness programmatically in a C++ program http://stackoverflow.com/questions/1001307/detecting-endianness-programmatically-in-a-c-program for OS which support multi architecture fat binary on Mac os x for example this will work for both ppc i386 whereas it is..
How do you make a HTTP request with C++? http://stackoverflow.com/questions/1011339/how-do-you-make-a-http-request-with-c the contents to see if it contains a 1 or a 0. Is it also possible to download the contents into a string Code samples would.. Here I use a shortcut to get it in a string stream ... std ostringstream os os myRequest.perform string asAskedInQuestion.. to get it in a string stream ... std ostringstream os os myRequest.perform string asAskedInQuestion os.str my 2 cents..
Get the IP address of the machine http://stackoverflow.com/questions/212528/get-the-ip-address-of-the-machine the IP address of the machine This Question is almost the same as the previously asked Get the IP Address of local.. a bit clearer The server will obviously have the localhost 127.0.0.1 The server will have an internal management IP address.. this question I found the ioctl solution problematic on os x which is POSIX compliant so should be similiar to linux ...
Printing lists with commas C++ http://stackoverflow.com/questions/3496982/printing-lists-with-commas-c things trip me up. EDIT Thanks everyone. This is why I post stuff like this here. So many good answers and tackled in different.. infix_iterator.h Lifted from Jerry Coffin's 's prefix_ostream_iterator #if defined INFIX_ITERATOR_H_ #define INFIX_ITERATOR_H_.. INFIX_ITERATOR_H_ #define INFIX_ITERATOR_H_ #include ostream #include iterator template class T class charT char class..
http://stackoverflow.com/questions/4421706/operator-overloading an index of the answers in the order in which they make most sense The General Syntax of operator overloading in C The Three.. the idea of providing an FAQ in this form then the posting on meta that started all this would be the place to do that... first place so your answer is very likely to get read by those who came up with the idea. c operators operator overloading..
overloading friend operator<< for template class http://stackoverflow.com/questions/4660123/overloading-friend-operator-for-template-class I make it work in my case warning friend declaration std ostream operator std ostream const D classT ' declares a non template.. case warning friend declaration std ostream operator std ostream const D classT ' declares a non template function warning.. .text 0x180 undefined reference to operator std basic_ostream char std char_traits char D int const ' collect2 ld returned..
Boolean expression (grammar) parser in c++ http://stackoverflow.com/questions/8706356/boolean-expression-grammar-parser-in-c there any sources that can help me do this c parsing boost spirit share improve this question Here is an implementation.. this question Here is an implementation based on Boost Spirit. Because Boost Spirit generates recursive descent parsers.. Here is an implementation based on Boost Spirit. Because Boost Spirit generates recursive descent parsers based on expression..
http://stackoverflow.com/questions/1042773/gcc-c-hello-world-program-exe-is-500kb-big-when-compiled-on-windows-how project configuration from Debug to Release used O1 Os flags stripping debugging symbols along the way binary size..
How to detect c++11 support of a compiler with cmake http://stackoverflow.com/questions/10984442/how-to-detect-c11-support-of-a-compiler-with-cmake CMAKE_CXX_FLAGS_DEBUG O0 g set CMAKE_CXX_FLAGS_MINSIZEREL Os DNDEBUG set CMAKE_CXX_FLAGS_RELEASE O4 DNDEBUG set CMAKE_CXX_FLAGS_RELWITHDEBINFO..
C++ vector that *doesn't* initialize its members? http://stackoverflow.com/questions/11149665/c-vector-that-doesnt-initialize-its-members Compiler was clang 3.2 with libc and flags std c 11 Os fcatch undefined behavior ftrapv pedantic Weverything Wno c..
Why does an overridden function in the derived class hide other overloads of the base class? http://stackoverflow.com/questions/1628768/why-does-an-overridden-function-in-the-derived-class-hide-other-overloads-of-the int main Derived obj obj.gogo 7 Got this error g pedantic Os test.cpp o test test.cpp In function `int main ' test.cpp 31..
Swapping two variable value without using 3rd variable http://stackoverflow.com/questions/1826159/swapping-two-variable-value-without-using-3rd-variable # else tempSwap x y # endif return x y Compiled using gcc Os main.c o swap The xor version takes real 0m2.068s user 0m2.048s..
Why does gcc generate 15-20% faster code if I optimize for SIZE instead of speed? http://stackoverflow.com/questions/19470873/why-does-gcc-generate-15-20-faster-code-if-i-optimize-for-size-instead-of-speed to generate noticeably faster code if I optimize for size Os instead of speed O2 or O3 and I have been wondering ever since.. work argv 1 argv 2 return result If I compile it with Os it takes 0.38s to execute this program and 0.44s if it is compiled.. flags have the same effect. The generated assembly with Os and O2 . Unfortunately my understanding of assembly is very..
Different math rounding behaviour between Linux, Mac OS X and Windows http://stackoverflow.com/questions/1961442/different-math-rounding-behaviour-between-linux-mac-os-x-and-windows windows version seems to work more stable but Linux and Os X their results do not change at all. Could you recommend another..
Resolving a linker error: undefined reference to static class members http://stackoverflow.com/questions/5603101/resolving-a-linker-error-undefined-reference-to-static-class-members is explicit as to the location of all these files avr gcc Os Wl gc sections mmcu atmega328p o Wheel_Chair_Joystick_Control.cpp.elf..
C/C++ gcc & ld - remove unused symbols http://stackoverflow.com/questions/6687630/c-c-gcc-ld-remove-unused-symbols the unused one with the following command to gcc g gcc Os fdata sections ffunction sections test.cpp o test.o Wl gc sections.. sections test.cpp o test.o Wl gc sections Note that Os is an additional linker flag that tells GCC to optimize for..
Does the evil cast get trumped by the evil compiler? http://stackoverflow.com/questions/712334/does-the-evil-cast-get-trumped-by-the-evil-compiler stack to printf 's arguments. However using O1 as well as Os O2 O3 and other optimization levels main leal 4 esp ecx andl..
How to reduce the size of executable produced by MinGW g++ compiler? http://stackoverflow.com/questions/7973274/how-to-reduce-the-size-of-executable-produced-by-mingw-g-compiler _s to specify dynamically linking against the libstdc .dll Os to optimize the binary for size. By default mingw static links..
Optimal buffer size for write(2) http://stackoverflow.com/questions/8803515/optimal-buffer-size-for-write2 and this happens in a very busy environment many similar I Os concurently . What is the optimal buffer size in the interval..
|