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c++ Programming Glossary: prehttp://stackoverflow.com/questions/1613230/uses-of-c-comma-operator which one can refer to as statement programming and expression programming . As you know every procedural programming.. and branching . These fundamental constructs are present in C C languages in two forms one for statement programming.. in two forms one for statement programming another for expression programming. For example when you write your program in..
What uses are there for “placement new”? http://stackoverflow.com/questions/222557/what-uses-are-there-for-placement-new placement new operator which constructs an object on a pre allocated buffer. This is useful when building a memory pool.. has already been allocated and constructing an object on a pre allocated buffer takes less time char buf new char sizeof string.. buffer takes less time char buf new char sizeof string pre allocated buffer string p new buf string hi placement new string..
Is there a performance difference between i++ and ++i in C++? http://stackoverflow.com/questions/24901/is-there-a-performance-difference-between-i-and-i-in-c answer for C c optimization performance post increment pre increment share improve this question Executive Summary..
C++/CLI Mixed Mode DLL Creation http://stackoverflow.com/questions/2691325/c-cli-mixed-mode-dll-creation seem to be even touching the managed code. So given a pre existing native code base what exactly step by step do you need..
Can we increase the re-usability of this key-oriented access-protection pattern? http://stackoverflow.com/questions/3324898/can-we-increase-the-re-usability-of-this-key-oriented-access-protection-pattern and it has the potential to become much cleaner and more expressive. In standard C 03 I think the following way is the easiest.. C 03. In C 0x the idiom can reach its simplest and most expressive form. This is due to both variadic templates and allowing.. allowing template parameters to be friends. Note that MSVC pre 2010 allows template friend specifiers as an extension therefore..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three operator When do I need to declare them myself How can I prevent my objects from being copied c copy constructor assignment.. and released in the destructor. Let us go back in time to pre standard C . There was no such thing as std string and programmers.. must tear down the old state before assigning to name to prevent memory leaks. Also we have to protect against self assignment..
Post-increment and pre-increment within a 'for' loop produce same output http://stackoverflow.com/questions/4706199/post-increment-and-pre-increment-within-a-for-loop-produce-same-output increment and pre increment within a 'for' loop produce same output The following.. results even though one uses post increment and the other pre increment. Here is the code for i 0 i 5 i printf d i for i 0.. i will be the same in both cases. The difference between pre and post increment is in the result of evaluating the expression..
Operator Precedence vs Order of Evaluation http://stackoverflow.com/questions/5473107/operator-precedence-vs-order-of-evaluation bound one cannot do without the other when talking about expressions. Let us take a simple example int a 1 Line 1 a a a Line.. AND logical OR and comma operators. For example in the expression p 0 q 0 all side effects of the sub expression p 0 are.. in the expression p 0 q 0 all side effects of the sub expression p 0 are completed before any attempt to access q. Between..
How to build Qt for Visual Studio 2010 http://stackoverflow.com/questions/5601950/how-to-build-qt-for-visual-studio-2010 into a guide. The problem or why is it not possible to use prebuilt binaries It seems that using binaries built for Visual.. Qt with Visual Studio 2010 it's not possible to use the pre built binaries which were made for Visual Studio 2008 but you.. doesn't matter if it's in system path or user path If you prefer to use Control Panel System Environment Variables then you..
How does the compilation, linking process work? http://stackoverflow.com/questions/6264249/how-does-the-compilation-linking-process-work of a C program involves several steps Preprocessing the preprocessor takes a C source code file and deals with the #include.. file and deals with the #include s #define s and other preprocessor directives. The output of this step is a pure C file.. The output of this step is a pure C file without pre processor directives Compilation the compiler takes the pre..
Pre & post increment operator behavior in C, C++, Java, & C# http://stackoverflow.com/questions/6457130/pre-post-increment-operator-behavior-in-c-c-java-c-sharp differences between C C C# and Java when it comes to post pre increment operators This is what I get with VC 10 Java 1.6 and.. c c share improve this question Java and C# evaluate expressions from left to right and the side effects are visible immediately.. visible immediately . In C the order of evaluation of subexpressions is unspecified and modifying the same object twice without..
C++: Pointer to class data member http://stackoverflow.com/questions/670734/c-pointer-to-class-data-member my best untested try an Apply function that would do some pre post processing before applying a user selected member function.. an object void Apply SomeClass c SomeClass func do hefty pre call processing c func call user specified function do hefty..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle peak performance of 4 floating point operations double precision per cycle be achieved on a modern x86 64 Intel cpu As.. which demonstrates peak performance that'd be greatly appreciated. My attempt #include stdio.h #include stdlib.h #include.. flops cycle have used clock in Windows which is not that precise I guess need to use a better timer thanks Mackie Messer..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks delete it even if you wanted What you should do You should prefer automatic storage duration. Need a new object just write.. library called std unique_ptr . There's also an old one pre C 11 named auto_ptr but it's now deprecated because it has a.. also an old one pre C 11 named auto_ptr but it's now deprecated because it has a strange copying behaviour. And then there..
Algorithm improvement for Coca-Cola can shape recognition http://stackoverflow.com/questions/10168686/algorithm-improvement-for-coca-cola-can-shape-recognition my implementation Language Done in C using OpenCV library. Pre processing Regarding image pre processing I mean how to transform..
C++ vector that *doesn't* initialize its members? http://stackoverflow.com/questions/11149665/c-vector-that-doesnt-initialize-its-members needless work Or must I end up making my own container Pre C 11 Note I'm passing the vector as my output buffer . I'm not..
http://stackoverflow.com/questions/1120140/csv-parser-in-c str m_str str.good str NULL this CSVIterator m_str NULL Pre Increment CSVIterator operator if m_str m_str m_row m_str m_str..
http://stackoverflow.com/questions/12437955/gcc-and-precompiled-headers and Precompiled Headers After reading this nice article The Care and.. After reading this nice article The Care and Feeding of Pre Compiled Headers I have some doubts regarding how these can.. from Google notably Diego Novillo are working on the PreParsed Header pph branch to improve the situation but the current..
Detecting CPU architecture compile-time http://stackoverflow.com/questions/152016/detecting-cpu-architecture-compile-time improve this question Here is some information about Pre defined Architecture Macros and other types of pre defined macros...
Downloading and integrating Qt5 with Visual Studio 2012 http://stackoverflow.com/questions/15826893/downloading-and-integrating-qt5-with-visual-studio-2012 2012 qt5 directx 11 share improve this question UPDATE Pre built binaries using the VS 2012 compiler are now available..
Preincrement faster than postincrement in C++ - true? If yes, why is it? [duplicate] http://stackoverflow.com/questions/2020184/preincrement-faster-than-postincrement-in-c-true-if-yes-why-is-it faster than postincrement in C true If yes why is it.. of the previous value around and adds a little extra code. Pre increment simply does it's job and gets out of the way. I typically..
Are child processes created with fork() automatically killed when the parent is killed? http://stackoverflow.com/questions/395877/are-child-processes-created-with-fork-automatically-killed-when-the-parent-is by the system Or I have to do it myself Thanks. Pre existing similar questions http stackoverflow.com questions..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points know these things reading them again won't make you crazy. Pre requisites An elementary knowledge of C Standard What are Sequence..
Post Increment and Pre Increment concept? http://stackoverflow.com/questions/4445706/post-increment-and-pre-increment-concept Increment and Pre Increment concept I dont understand the concept of postfix..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers print C STL containers Please take note of the updates at.. iostream #include utility #include tuple namespace std Pre declarations of container types so we don't actually have to.. std tr1 true_type #endif _MSC_VER 1400 namespace std Pre declarations of container types so we don't actually have to..
Operator Precedence.. () and ++ http://stackoverflow.com/questions/4897934/operator-precedence-and Precedence.. and Salute.. I have an unusual problem. Here in this.. MSDN library we can see that precedence of is higher than Pre increment . but when I run this code it seems that precedence..
How to add code at the entry of every function? http://stackoverflow.com/questions/5081123/how-to-add-code-at-the-entry-of-every-function void f void struct Wrap void operator const std cout Pre call hook std endl f namespace void test_func std cout Real.. public WrapMem C inst inst inst void operator std cout Pre method call hook std endl inst . F void operator const std cout.. call hook std endl inst . F void operator const std cout Pre method const call hook std endl inst . F class Foo public void..
App does not run with VS 2008 SP1 DLLs, previous version works with RTM versions http://stackoverflow.com/questions/59635/app-does-not-run-with-vs-2008-sp1-dlls-previous-version-works-with-rtm-versions not worry about versions or installing them to the system. Pre SP1 this was working fine and still works fine on our developer..
Pre & post increment operator behavior in C, C++, Java, & C# http://stackoverflow.com/questions/6457130/pre-post-increment-operator-behavior-in-c-c-java-c-sharp post increment operator behavior in C C Java C# DISCLAIMER..
Optimizations for pow() with const non-integer exponent? http://stackoverflow.com/questions/6475373/optimizations-for-pow-with-const-non-integer-exponent multiplication. But it's just 4 fast instructions long. Pre multiply convert from integer power multiply convert to integer... __m128 xfm4 _mm_rsqrt_ps xf __m128 xf4 _mm_mul_ps xf xfm4 Precisely calculate x^2 and x^3 __m128 x2 _mm_mul_ps x0 x0 __m128.. __m128 xfm4 _mm_rsqrt_ps xf __m128 xf4 _mm_mul_ps xf xfm4 Precisely calculate x^2 and x^3 __m128 x2 _mm_mul_ps arg arg __m128..
How do you convert a string to ascii to binary in C#? http://stackoverflow.com/questions/736533/how-do-you-convert-a-string-to-ascii-to-binary-in-c str.Select c Convert.ToString c 2 Console.WriteLine letter Pre LINQ foreach char letter in str.ToCharArray Console.WriteLine..
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