I recently tried running some code on VS Code but, as I'm using C++11 Standard code, I have to manually change the execution code in terminal to g++ -std=c++11 to actually run the code without errors. I'm using Code Runner…
I am very new here and to coding in general so apologies in advance for any mistakes in my questions and code. I am currently working on this problem: Primary U.S. interstate highways are numbered 1-99. Odd numbers (like the…
I made some modifications to this code snippet which is used to sendrecieve ICMP packets through ASIO APIs. Here are the modifications that I made(full code snippet is seen below): using the standard version API instead of the corresponding API…
In the following code, why is std::make_unique necessary to initialize Foo::up_? Specifically, why doesn't initializing Foo::up_ with new Bar(...) -- as in the commented-out code -- work? #include <iostream> #include <memory> enum E { Y = 0, Z = 1,…
The following code... // main.cpp #include <grpcpp/grpcpp.h> class ClientContextContainer { public: ClientContextContainer( int i ) : i_(i) {} private: grpc::ClientContext client_context_; int i_; }; class ArrayContainer { public: ArrayContainer() : ccc_{ {42}, {1138} } {} private: ClientContextContainer ccc_[2]; }; int…
This question is a follow-up to Why doesn't returning a std::unique_ptr violate unique_ptr's deleted copy constructor? (which is answered here: Returning unique_ptr from functions ) This leads me back to the original problem I'd faced. I have to work with…
I have a dialog and at the bottom a normal box sizer with 3 buttons in it. When I do m_buttonCancel->SetDefault(); the code works in the sense that pressing enter does cancel, but there is no visual clue that this…
I have the following： void print_str(std::shared_ptr<std::string> str) { std::cout << str->c_str() << std::endl; } int main() { auto str = std::make_shared<std::string>("Hello"); std::function<void()> f = std::bind(print_str, str); f(); // correctly print: Hello return 0; } I think the type of std::bind(print_str,…
I call this function in my centos 7 server. I find std::this_thread::sleep_for(chrono::nanoseconds(1)) actually sleep for one ms, Is there any explanation? I think it may be caused by os setting?
If I try to instantiate a large two-dimensional std::array on our Centos 7.6 system, compiled with g++ 7.3.1, I get a segmentation fault: int main() { const unsigned NUM_BUFFERS = 200; const unsigned BUFFER_SIZE_BYTES = 1024 * 1024; std::array<std::array<unsigned char,…