I am making a c++ library and I want to include fcntl.h in the header (for the permission constants) But I have a function called open, the argument list contains classes that can be casted to the fcntl’s open argument list types. That means when i use #include<fcntl.h> I am getting an ambiguous error. I ..
Category : c++
I have a project structured like this: bin/ Linux-Debug/ Linux-Release/ lib/ Linux-Debug/ Linux-Release/ build/ Debug/ Release/ ExampleSub1/ ExampleSub2/ CMakeLists.txt and a CMakeLists.txt file: cmake_minimum_required(VERSION 3.21.3) set(CMAKE_EXPORT_COMPILE_COMMANDS ON) project(Example) set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/lib/${CMAKE_SYSTEM_NAME}-$<CONFIG> ) set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/lib/${CMAKE_SYSTEM_NAME}-$<CONFIG> ) set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin/${CMAKE_SYSTEM_NAME}-$<CONFIG> ) add_subdirectory(ExampleSub1) add_subdirectory(ExampleSub2) If I run cmake ../.. from build/Release it generates a Makefile which in turn successfully creates ..
I am trying to make a quick program that checks if the elements of an array can represent a premutation. The logic I use could be improved but my main problem is that v is not loaded correctly(I only get 1s). my code“` #include <iostream> using namespace std; int* readPerm(int n) { int v[n]; int ..
Follow-up question for Clang on Windows: how to disable the default MSVC compatibility?. Context: "clang on Windows" uses MSVC C++ library: $ /cygdrive/d/LLVM/13.0.0/bin/clang.exe P92092.C -fno-ms-compatibility -fno-ms-extensions C:Program Files (x86)Microsoft Visual Studio19ProfessionalVCToolsMSVC.29.30133includevcruntime.h:364:18: error: expected ‘;’ after top level declarator _CRT_END_C_HEADER Here we see that under -fno-ms-compatibility -fno-ms-extensions clang still uses MSVC C++ library. Question: How to ..
I am trying to replace multiple occurrences of ‘r’ into a single ‘r’. Example: rrnrvbrrntFull of Escape Sequencessssrnnrrrrnn And I want convert it into rnrvbrntFull of Escape Sequencessssrnnrnn I am trying std::regex_replace(str, std::regex("[r]+"), "r"); But Not able to achieve it. Any comments. Source: Windows Que..
If I have a function, say int square(int i) { return i * i; } And a template int version of it: template<int i> int square() { return i * i; } Can I somehow share the implementation code, or do I need to maintain two separate functions? Source: Windows Que..
I’m trying to work with the new jthreads and have started a std::jthread where the operator() does get called, but I am unable to get it to stop. I want to create the thread by calling it as a function object. my_thrd = std::make_shared<std::jthread>(&Test::operator(), &test); If operater() of my Test class is written as the ..
I’ve just started to use VSCode, I meet this error and try some ways to fix but it doesn’t work. This is my launch.json { // Use IntelliSense to learn about possible attributes. // Hover to view descriptions of existing attributes. // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387 "version": "0.2.0", "configurations": [ { "name": "C/C++: Build ..
я пытаюсь добавить импульс игроку при выстреле с помощью AddImpulse(), но когда я это делаю игрок проваливается в стены. За основу я беру стандартный проект "First Person". Единственное изменение это включение физики у капсулы к которой применяется импульс. GetCapsuleComponent()->AddImpulse(FVector(0, 0, 100)); Source: Windows Que..
I’m facing LNK2019 error: unresolved external symbol on some_container methods (including constructor and destructor) while trying to build my project. This comes from my template class: some_container.hpp #include <unordered_set> namespace name_space { template<typename T> class some_container { private: static std::unordered_set<T> some_set; public: some_container(); ~some_container(); static const bool insert(T item); } } some_container.cpp #include "some_container.hpp" using ..
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