system-error

C++11 introduced the <system_error> header containing a generic system to handle error codes. An std::error_code is a tuple containing an int , the error code, and a reference to an std::error_category , which defines the error domain and handling of the error code. The standard library comes with four categories: std::generic_category , std::system_category , std::future_category , and std::iostream_category . There are conflicts on which category to use, both here on SO and on C++ reference sites, when creating std::error_code s/throwing std::system_error s with errno and WinAPI error codes:

I have installed two PHP versions in my WAMP server. When I am using 5.3.10, my wamp server is running just fine. But when I switch to older version of PHP (5.2.9) my wamp server tray icon is showing orange icon. If you click on Put Online I am getting following error. I tried to change the port in httpd.conf to 8855 and still I am getting same error. How can I resolve this error? Could not execute menu item (internal error)[Exception] Could not perform service action:The service has not been started GIRISH By default , the WAMP server will take 80 as its working port. You can change that port

This question already has an answer here: What are the correct link options to use std::thread in GCC under linux? 5 answers So I wrote a program to test threads on 64 bit kubuntu linux, version 13.04. Actually I robbed the code from someone else who was writing a test program. #include <cstdlib> #include <iostream> #include <thread> void task1(const std::string msg) { std::cout << "task1 says: " << msg << std::endl; } int main(int argc, char **argv) { std::thread t1(task1, "Hello"); t1.join(); return EXIT_SUCCESS; } I compiled using: g++ -pthread -std=c++11 -c main.cpp g++ main.o -o main.out