header-files

问题 related link http://kevinaboos.wordpress.com/2013/07/23/clang-tutorial-part-ii-libtooling-example I'am using CommonOptionsParser to parse arguments for clang tool: // parse the command-line args passed to your code CommonOptionsParser op(argc, argv); // create a new Clang Tool instance (a LibTooling environment) ClangTool Tool(op.getCompilations(), op.getSourcePathList()); // run the Clang Tool, creating a new FrontendAction (explained below) int result = Tool.run(newFrontendActionFactory

问题 I'm considering between header-only vs. header&source design. I'm not sure if the header&source allows compiler to optimize across object files and across linkage ? such as inlining optimization ? 回答1: Header files and source files typically compiled as a single translation unit (since headers are included in the source files). So, that won't be an issue (unless you have a peculiar environment where headers are compiled separately). GCC does support optimizations across different translation

问题 Up until now I've managed to get Xcode to link to the Gnu Scientific Libraries (GSL) which I've installed under /usr/local/lib/ and with header files under /usr/local/include. Under "Build Phases" > "Link Binary With Libraries" I had added libgsl.a etc. Today, Xcode gives an error message claiming it can't find header files. For example #include <stdio.h> #include <gsl/gsl_matrix.h> int main(int argc, const char * argv[]) { printf("Hello, World!\n"); return 0; } results in 'gsl/gsl_matrix.h'

问题 I've read up a bit on preprocessor directives and I've seen #import being used a few times in C programs. I'm not sure what the difference is between them, some sites have said that #include is only used for header files and #import is used more in Java and is deprecated in C. If that's the case, why do some programs still use #import and how exactly is it different from #include? Also, I've used #import in a few of my C programs and it seems to work fine and do the same thing as #include.

问题 There are two classes that are related to each other in their headers: PlotMarker #ifndef PLOTMARKER_H #define PLOTMARKER_H #include <QObject> #include "plotter.h" class Plotter; class PlotMarker : public QObject { // ... Plotter* m_attachedPlot; // ... }; #endif // PLOTMARKER_H Plotter #ifndef PLOTTER_H #define PLOTTER_H // ... #include "plotmarker.h" // ... class PlotMarker; class Plotter : public QQuickPaintedItem { // ... QLinkedList<PlotMarker*> m_markerList; // ... }; #endif // PLOTTER

问题 First off, I was about to write a long list of if/else statements in vim and realized that 1) there was a better way to do what I was trying to do and 2) SO would be ripe with help on the subject. So! I have a variety of files spread about like foo/src/file01.C foo/src/file02.cc foo/src/file03.c foo/include/file01.hh foo/include/file02.h foo/include/file03.h If you notice that the C/H, cc/hh, c/h extension may or may not match then you are keen and I'd like you to please help. I've look at

问题 I have set SOURCE_BROWSER = NO and VERBATIM_HEADERS = YES because I want clients to be able to see the header files. However, I only want to allow them to see certain headers. How is the best way to do this. Thanks in advance for any help! EDIT : This appears to work, but I would be interested in any other better ways. EXCLUDE_PATTERNS = */.svn/* *debug* *impl* *boost* 回答1: If \internal tag does not work, you can try \cond ... \endcond tags for marking a portion of code to be hidden from

问题 Hi I noticed if I include a header file in a .cpp then I can create an object of that header file's class. Like if I include A.h in main.cpp then I can write A *a; in main.cpp . But this doesn't work if I include a header file in another header file and then try to create the object of that included header file. Like, file B.h : #include "A.h" class B { public: B(){}; A *a; }; I have to add forward declaration of the class A to make it work. Why? 回答1: Here are the basics: For any type A , if

问题 I want integrate a header .h or .dll file in CAPL (concretly Visa32.dll, visa.h or sicl.h) to control a multimeter 34461A. How can I include the .h files or .dll file in CANoe? I created an ECU module called multimeter. Thanks, 回答1: Including external DLLs in CAPL is possible, but you will need to create a wrapper for all the functions you're going to use. Take a look at \CANoe\Demo_AddOn\Capldll directorty which features such a wrapper. It's a MSVC project exporting a few simple functions to

问题 #include <sys/types.h> #include <sys/socket.h> #include <netinet/in.h> #include <unistd.h> #include <arpa/inet.h> #include <netdb.h> #include <unistd.h> #include <signal.h> #include <stdio.h> #include <string.h> #include <fcntl.h> #include <errno.h> #include <sys/time.h> #include <stdlib.h> #include <memory.h> #include <ifaddrs.h>#include <net/if.h> #include <stdarg.h> #define BACKLOG 10 void * get_in_addr(struct sockaddr *sa){ if(sa->sa_family == AF_INET){ return &((sockaddr_in *)sa)->sin