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c++ Programming Glossary: deC++ iterate into nested struct field with boost fusion adapt_struct http://stackoverflow.com/questions/12084781/c-iterate-into-nested-struct-field-with-boost-fusion-adapt-struct struct Following the previous answers I come up with the code below. The problem is at the #if 0 clause the code does not.. the code below. The problem is at the #if 0 clause the code does not compile. As an alternative solution I created decode.. does not compile. As an alternative solution I created decode function to take a void pointer to the target argument...
http://stackoverflow.com/questions/14677997/stdfunction-vs-template it and they truly suck in comparison with templates. #include iostream #include functional #include string #include chrono.. suck in comparison with templates. #include iostream #include functional #include string #include chrono template typename.. templates. #include iostream #include functional #include string #include chrono template typename F float calc1 F f return..
C++ Which is faster: Stack allocation or Heap allocation http://stackoverflow.com/questions/161053/c-which-is-faster-stack-allocation-or-heap-allocation This question may sound fairly elementary but this is a debate I had with another developer I work with. I was taking care.. fairly elementary but this is a debate I had with another developer I work with. I was taking care to stack allocate things.. them. He was talking to me and watching over my shoulder and commented that it wasn't necessary because they are the..
Copy constructor and = operator overload in C++: is a common function possible? http://stackoverflow.com/questions/1734628/copy-constructor-and-operator-overload-in-c-is-a-common-function-possible MyClass operator const MyClass have pretty much the same code the same parameter and only differ on the return is it possible.. providing a good operator is a challenge when it comes to dealing with the old state and issues arising from self assignment... from self assignment. Also all members and bases get default initialized first even if they are to be assigned to from..
Thread safety of std::map for read-only operations http://stackoverflow.com/questions/1846186/thread-safety-of-stdmap-for-read-only-operations I'm doing is reading from the map using the following code std string name here N is the field id for which I want the.. work acros most main STL implementations. Update Edited code sample for const correctness. c multithreading stl thread safety.. as your map remains the same. The map you use is immutable de facto so any find will actually do a find in a map which does..
Best way to design for localization of strings http://stackoverflow.com/questions/185291/best-way-to-design-for-localization-of-strings way to design for localization of strings This is kinda a general question.. opinions. I've been trying to come up with a good way to design for localization of string resources for a Windows MFC application.. My wishlist is Must preserve string literals in code as opposed to replacing with macro #define resource ID's so..
How does delete[] “know” the size of the operand array? http://stackoverflow.com/questions/197675/how-does-delete-know-the-size-of-the-operand-array does delete &ldquo know&rdquo the size of the operand array Foo set.. the size of the operand array Foo set new Foo 100 ... delete set You don't pass the array's boundaries to delete . But.. ... delete set You don't pass the array's boundaries to delete . But where is that information stored Is it standardised..
Can a C++ class determine whether it's on the stack or heap? http://stackoverflow.com/questions/2054710/can-a-c-class-determine-whether-its-on-the-stack-or-heap a C class determine whether it's on the stack or heap I have class Foo ...... on the heap I want Foo to be able to do different things depending on whether it's allocated on the Stack or the Heap. Edit.. almost certainly isn't . In fact it's almost always a bad idea. Why do you think you need to do this I usually find it's because..
Boost.ASIO-based HTTP client library (like libcurl) http://stackoverflow.com/questions/2251361/boost-asio-based-http-client-library-like-libcurl HTTP client library like libcurl I am looking for a modern C HTTP library because libcurl's shortcomings are difficult.. Solutions based on Boost.ASIO which has become the de facto C TCP library are preferred. c http curl boost asio .. improve this question The other day somebody recommended this on another thread http cpp netlib.github.com I think this..
http://stackoverflow.com/questions/3525177/program-portability and compilers. 2. Write to the standard not to your development platform. This means only do something if the standard.. available here among other places http openassist.googlecode.com files C 2B 2B 20Standard 20 20ANSI 20ISO 20IEC 2014882 202003.pdf.. time_t is double And so on. By which I don't mean write code that relies on those things to be true I mean write code that..
Why is this cin reading jammed? http://stackoverflow.com/questions/478258/why-is-this-cin-reading-jammed statement to get the thing read my yes no answer but the code just won't respond. The program bit that's failing is located.. respond. The program bit that's failing is located inside void dictionaryMenu vector WordInfo wordInfoVector and reads.. synonyms 1 7 7 1 3 2 antonyms 1 3 3 1 7 4 5 5 4 7 3 #include iostream #include fstream #include string #include sstream #include..
Why unnamed namespace is a“ superior” alternative to static? [duplicate] http://stackoverflow.com/questions/4977252/why-unnamed-namespace-is-a-superior-alternative-to-static from the C Standard reads The use of the static keyword is deprecated when declaring objects in a namespace scope the unnamed.. reads The use of the static keyword is deprecated when declaring objects in a namespace scope the unnamed namespace provides.. objects in a namespace scope the unnamed namespace provides a superior alternative. I don't understand why unnamed namespace..
http://stackoverflow.com/questions/5450159/type-erasure-techniques taken approach that I know are virtual functions. Just hide the implementation of your class inside an interface based class.. functions. Just hide the implementation of your class inside an interface based class hierarchy. Many Boost libraries do.. libraries do this for example Boost.Any does this to hide your type and Boost.Shared_ptr does this to hide the de allocation..
Any good building tools for a C++ project, which can replace make? http://stackoverflow.com/questions/54674/any-good-building-tools-for-a-c-project-which-can-replace-make tools for a C project which can replace make i'm wondering if there is any nice and neat tool to replace the GNU Autotools.. thing to use. It is simple to generate all the files that de Autotools require if the project is small but if the source.. require if the project is small but if the source code is divided in many directories with multiple third party libraries..
Serialize and send a data structure using Boost? http://stackoverflow.com/questions/652193/serialize-and-send-a-data-structure-using-boost Boost I have a data structure that looks like this typedef struct unsigned short m_short1 unsigned short m_short2 unsigned.. TCP IP then have another application receive the data and de serialize it using the same boost libraries. I'm trying to following.. And if you private protocol where computers with same order of bytes work big little that just send structure as is POD...
Position of least significant bit that is set http://stackoverflow.com/questions/757059/position-of-least-significant-bit-that-is-set bit that is set I am looking for an efficient way to determine the position of the least significant bit that is set.. unsigned pos 0 while value 1 value 1 pos return pos Any ideas how to squeeze some cycles out of it Note this question is.. me xyzoptimization is evil. edit Thanks everyone for the ideas I've learnt a few other things too. Cool c c optimization..
How do I select a range of values in a switch statement? http://stackoverflow.com/questions/9432226/how-do-i-select-a-range-of-values-in-a-switch-statement exercise.cpp 34 warning C4065 switch statement contains 'default' but no 'case' labels Build 0 succeeded 1 failed 0 up to.. contains 'default' but no 'case' labels Build 0 succeeded 1 failed 0 up to date 0 skipped Code #include iostream using.. Build 0 succeeded 1 failed 0 up to date 0 skipped Code #include iostream using namespace std int main int score Vraag..
In C++ is “const” after type ID acceptable? http://stackoverflow.com/questions/988069/in-c-is-const-after-type-id-acceptable is over the style issue of where to put const on declarations. He is of the opinon that it should go either in front.. anyway. I need rules that are consistent and easy to understand and the only way I can make sense of const is that it.. int would be respectively int const i int const i As an added benifit doing things this way makes deeper levels of indirection..
Boost: De-serializing a custom C++ object passed over ZeroMQ pull socket http://stackoverflow.com/questions/14565538/boost-de-serializing-a-custom-c-object-passed-over-zeromq-pull-socket De serializing a custom C object passed over ZeroMQ pull socket.. I opened up earlier in another thread at Boost Serializing De serializing a custom C object passed over ZeroMQ pull socket.. relatively new to C realm and appreciate any further help. Description I have a C class named GenericMessage which simply..
http://stackoverflow.com/questions/18463414/getting-segfault-due-to-string-data-type-variable-in-protobuf-server-and-clent-c message data to a string msgObject.ParseFromString tmp Deserialize the message object from protobuf wire format. NOTE.. the message object from protobuf wire format. NOTE De Serializing from to a unique efficient wire format used with..
Extract multiple words to one string variable http://stackoverflow.com/questions/2119080/extract-multiple-words-to-one-string-variable For example they would fail with a name like Richard Van De Rothstyne . As the OP noted with scanf you could do something..
Determine if two rectangles overlap each other? http://stackoverflow.com/questions/306316/determine-if-two-rectangles-overlap-each-other if two rectangles overlap each other I am trying to.. a sufficient condition for Overlap is the opposite De Morgan Not Cond1 And Not Cond2 And Not Cond3 And Not Cond4 this..
Cross-platform way to get line number of an INI file where given option was found http://stackoverflow.com/questions/8358975/cross-platform-way-to-get-line-number-of-an-ini-file-where-given-option-was-foun of trailing whitespace alternative escape with slash De escaping of the slashes is left as an exercise Errors are also.. at ' inireader fragment f l grammar.makenode ' std endl Demo Input Cat1 name1 100 #skipped name2 200 #not skipped name3.. Cat_3 UsagePage 12 Usage 39 #Usage4 39 Offset 0x12304 Demo Output POSITIONINFO 0 Parse success Cat1 name1 100 name2 200..
Destructor not invoked when an exception is thrown in the constructor http://stackoverflow.com/questions/9971782/destructor-not-invoked-when-an-exception-is-thrown-in-the-constructor not invoked when an exception is thrown in the constructor.. std cout MyClass Allocated n ~MyClass std cout MyClass De allocated n int increment return ptr int main boost scoped_ptr.. 0 std cout MyClass Allocated n ~MyClass std cout MyClass De allocated n int increment return ptr int main boost scoped_ptr..
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