header-files

问题 In a related question (" std::string formatting like sprintf ") I learned about this awesome new C++20 header <format>. However, there seems to be no supporting compiler. Is this correct or is there a way to use it anyway? I'm using g++ 9.3 with the -std=c++2a flag and the library <format> is not recognised. #include <format> // fatal error: format: No such file or directory #include <iostream> int main(){ std::cout << std::format("Hello {}!", "World"); } g++-9 test.cpp -o test -std=c++2a 回答1

来源： https://stackoverflow.com/questions/20125936/extract-list-of-functions-in-header-file

来源： https://stackoverflow.com/questions/17698235/when-should-i-use-inl-h-files

来源： https://stackoverflow.com/questions/17698235/when-should-i-use-inl-h-files

问题 Is there an automated way to take a large amount of C++ header files and combine them in a single one? This operation must, of course, concatenate the files in the right order so that no types, etc. are defined before they are used in upcoming classes and functions. Basically, I'm looking for something that allows me to distribute my library in two files ( libfoo.h, libfoo.a ), instead of the current bunch of include files + the binary library. 回答1: As your comment says: .. I want to make it

问题 Unable to communicate back with the site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP. There is any Solution I am editing in a header file in WordPress, Getting this problem 回答1: Try this. I had the same issue and decided to look into it. Change line 492 of wp-admin/includes/file.php: FROM if ( $is_active && 'php' === $extension ) { TO if ( $is_active && 'php' === $extension && false) {

问题 Unable to communicate back with the site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP. There is any Solution I am editing in a header file in WordPress, Getting this problem 回答1: Try this. I had the same issue and decided to look into it. Change line 492 of wp-admin/includes/file.php: FROM if ( $is_active && 'php' === $extension ) { TO if ( $is_active && 'php' === $extension && false) {

问题 I've seen in multiple places references to using generator expressions when defining include directories, so you can define different places for the includes during compilation and during installation. For example: # Define headers for this library. PUBLIC headers are used for # compiling the library, and will be added to consumers' build # paths. target_include_directories(lib PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include> $<INSTALL_INTERFACE:include> PRIVATE src) I'm building

问题 I am working on a library that I'm using in my other projects and I have the following header file: #pragma once #include <iostream> #include <map> #include "my_library/core/Structures.h" namespace My_Library { namespace NodeReaders { namespace HumanReadable { char charBuffer[256]; unsigned int uintBuffer; unsigned long long microsecondBuffer; unsigned int getNextUInt(std::istream & is) { /// Implementation } unsigned long getNextMicroseconds(std::istream & is) { /// Implementation } ... }; /

问题 When writing C++ code, I often start by writing full 'implementation' code in my header files, then later need to refactor the implementation into a .cpp file. This is great, but I find this process laborious, but otherwise pretty easy, so I wondered about whether is there any automated way to do this? Specifically, I want to convert all class and function definitions in the .h to declarations, and have them declared in a new .cpp file. I'm using xcode, but I am open to any solutions. 回答1: